{"id":7902,"date":"2026-09-14T21:37:08","date_gmt":"2026-09-14T20:37:08","guid":{"rendered":"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/3-1-1-periodicity\/"},"modified":"2026-09-14T21:41:34","modified_gmt":"2026-09-14T20:41:34","slug":"3-1-1-periodicity","status":"publish","type":"page","link":"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/3-1-1-periodicity\/","title":{"rendered":"3.1.1 Periodicity"},"content":{"rendered":"\n<div class=\"ols-ocr311-page\">\n\n  <aside class=\"ols-sidebar\">\n  <div class=\"ols-sidebar-header\">\n    <h3>Revision Notes<\/h3>\n    <p>OCR A Level Chemistry A<\/p>\n  <\/div>\n  <div class=\"ols-topic-group\">\n    <h4>3.1.1 Periodicity<\/h4>\n    <ul class=\"ols-topic-list\">\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/3-1-1-periodicity\/\">Section overview<\/a><\/li>\n      <li>\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/3-1-1-periodicity\/ionisation-energy\/\">Ionisation Energy<\/a>\n        <ul class=\"ols-subtopic-list\">\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/3-1-1-periodicity\/ionisation-energy\/introduction-to-ionisation-energy\/\">Introduction to Ionisation Energy<\/a><\/li>\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/3-1-1-periodicity\/ionisation-energy\/successive-ionisation-energies\/\">Successive Ionisation Energies<\/a><\/li>\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/3-1-1-periodicity\/ionisation-energy\/trends-in-a-period\/\">Trends in a Period<\/a><\/li>\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/3-1-1-periodicity\/ionisation-energy\/trends-in-a-group\/\">Trends in a Group<\/a><\/li>\n        <\/ul>\n      <\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/3-1-1-periodicity\/periodic-trends\/\">Periodic Trends<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/2-2-2-bonding-and-structure\/metallic-bonding\/\">Metallic Bonding (2.2.2)<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/2-2-2-bonding-and-structure\/covalent-bonding\/giant-covalent-structures\/\">Giant Covalent Structures (2.2.2)<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/2-2-2-bonding-and-structure\/structure-types\/\">Structure Types (2.2.2)<\/a><\/li>\n    <\/ul>\n  <\/div>\n  <div class=\"ols-topic-group\">\n    <h4>Other OCR Sections<\/h4>\n    <ul class=\"ols-topic-list\">\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/2-1-1-atomic-structure-and-isotopes\/\">2.1.1 Atomic Structure and Isotopes<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/2-2-1-electron-structure\/\">2.2.1 Electron Structure<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/2-2-2-bonding-and-structure\/\">2.2.2 Bonding and Structure<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-1-basic-concepts-of-organic-chemistry\/\">4.1.1 Basic Concepts of Organic Chemistry<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/\">4.1.2 Alkanes<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-3-alkenes\/\">4.1.3 Alkenes<\/a><\/li>\n    <\/ul>\n  <\/div>\n<\/aside>\n<script>\r\n(function() {\r\n  function normalisePath(path) {\r\n    return String(path || '')\r\n      .split('?')[0]\r\n      .split('#')[0]\r\n      .replace(\/\\\/+$\/, '')\r\n      .toLowerCase();\r\n  }\r\n\r\n  function highlightActive() {\r\n    var sidebar = document.querySelector('.ols-sidebar');\r\n    if (!sidebar) return false;\r\n\r\n    var currentPath = normalisePath(window.location.pathname);\r\n    var links = sidebar.querySelectorAll('a[href]');\r\n    var matched = null;\r\n    var matchedLength = 0;\r\n\r\n    sidebar.querySelectorAll('.active, .active-main, .parent-active').forEach(function(item) {\r\n      item.classList.remove('active', 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grid-template-columns: 1fr; gap: 14px; }\n      .ols-ocr311-spec-section { padding: 52px 0 64px; }\n      .ols-ocr311-spec-wrap { padding: 24px 18px; border-radius: 20px; }\n      .ols-ocr311-info-grid { grid-template-columns: 1fr 1fr; }\n      .ols-ocr311-spec-row { flex-direction: column; }\n      .ols-ocr311-spec-code { flex: 0 0 auto; min-height: 34px; }\n    }\n  <\/style>\n\n  <!-- BREADCRUMB BAR -->\n  <div class=\"ols-ocr311-breadcrumb-bar\">\n    <div class=\"ols-ocr311-container\">\n      <nav class=\"ols-ocr311-breadcrumb\" aria-label=\"Breadcrumb\">\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/\">Revision Notes<\/a> \/\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/\">A Level Chemistry<\/a> \/\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/\">OCR<\/a> \/\n        <span>3.1.1 Periodicity<\/span>\n      <\/nav>\n    <\/div>\n  <\/div>\n\n  <!-- INTRO -->\n  <section class=\"ols-ocr311-intro\">\n    <div class=\"ols-ocr311-container\">\n      <div class=\"ols-ocr311-intro-inner\">\n        <div>\n          <div class=\"ols-ocr311-eyebrow\">OCR A Level Chemistry A &#8211; Module 3 Periodic Table and Energy<\/div>\n          <h1>3.1.1<br>Periodicity<\/h1>\n          <div class=\"ols-ocr311-accent-bar\"><\/div>\n          <p class=\"ols-ocr311-intro-lead\">Section 3.1.1 covers the arrangement of the Periodic Table, periodic trends in electron configuration, first and successive ionisation energies, and the structures and melting points of the elements across Periods 2 and 3. Ionisation energy and periodic trends are here; metallic bonding and giant covalent lattices are on the 2.2.2 Bonding and Structure pages linked below.<\/p>\n        <\/div>\n        <div class=\"ols-ocr311-info-grid\">\n          <div class=\"ols-ocr311-info-card\"><div class=\"ols-ocr311-info-card-label\">Exam Paper<\/div><div class=\"ols-ocr311-info-card-value\">Paper 1 &amp; 2<\/div><div class=\"ols-ocr311-info-card-sub\">H432\/01 and H432\/02<\/div><\/div>\n          <div class=\"ols-ocr311-info-card\"><div class=\"ols-ocr311-info-card-label\">Specification Points<\/div><div class=\"ols-ocr311-info-card-value\">3.1.1 (a) &#8211; (g)<\/div><div class=\"ols-ocr311-info-card-sub\">7 learning outcomes<\/div><\/div>\n          <div class=\"ols-ocr311-info-card\"><div class=\"ols-ocr311-info-card-label\">Topic Parts<\/div><div class=\"ols-ocr311-info-card-value\">5 of 5 live<\/div><div class=\"ols-ocr311-info-card-sub\">Ionisation Energy, Periodic Trends + 2.2.2 links<\/div><\/div>\n          <div class=\"ols-ocr311-info-card\"><div class=\"ols-ocr311-info-card-label\">Exam Board<\/div><div class=\"ols-ocr311-info-card-value\">OCR A<\/div><div class=\"ols-ocr311-info-card-sub\">H432 (2015 onwards)<\/div><\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <!-- TOPIC CARDS -->\n  <section class=\"ols-ocr311-topics\">\n    <div class=\"ols-ocr311-container\">\n      <div class=\"ols-ocr311-section-header\">\n        <h2 class=\"ols-ocr311-section-title\">Revision Notes<\/h2>\n        <p class=\"ols-ocr311-section-sub\">Work through 3.1.1 in a structured sequence.<\/p>\n      <\/div>\n      <div class=\"ols-ocr311-cards-grid\">\n        <!-- Card 1: Ionisation Energy -->\n        <a class=\"ols-ocr311-card ols-ocr311-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/3-1-1-periodicity\/ionisation-energy\/\">\n          <div class=\"ols-ocr311-card-img-wrap\">\n            <div class=\"ols-ocr311-visual ols-ocr311-visual--polarity\">\n              <div class=\"ols-ocr311-visual-panel\">\n                <div class=\"ols-ocr311-visual-kicker\">Energy<\/div>\n                <div class=\"ols-ocr311-visual-main\">Ionisation<br>Energy<\/div>\n                <div class=\"ols-ocr311-config-line\" aria-hidden=\"true\"><span>X(g) \u2192 X\u207a(g) + e\u207b<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-ocr311-card-num\">1<\/div>\n          <\/div>\n          <div class=\"ols-ocr311-card-body\">\n            <p class=\"ols-ocr311-card-title\">Ionisation Energy<\/p>\n            <p class=\"ols-ocr311-card-desc\">First and successive ionisation energies, the factors behind them, trends across Periods 2 and 3 and down a group (3.1.1 (c)).<\/p>\n            <span class=\"ols-ocr311-card-cta\">Start revising<svg viewBox=\"0 0 16 16\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 8h10M9 4l4 4-4 4\"><\/path><\/svg><\/span>\n          <\/div>\n        <\/a>\n        <!-- Card 2: Periodic Trends -->\n        <a class=\"ols-ocr311-card ols-ocr311-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/3-1-1-periodicity\/periodic-trends\/\">\n          <div class=\"ols-ocr311-card-img-wrap\">\n            <div class=\"ols-ocr311-visual ols-ocr311-visual--shapes\">\n              <div class=\"ols-ocr311-visual-panel\">\n                <div class=\"ols-ocr311-visual-kicker\">Trends<\/div>\n                <div class=\"ols-ocr311-visual-main\">Periodic<br>Trends<\/div>\n                <div class=\"ols-ocr311-config-line\" aria-hidden=\"true\"><span>Na \u2192 Ar<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-ocr311-card-num\">2<\/div>\n          <\/div>\n          <div class=\"ols-ocr311-card-body\">\n            <p class=\"ols-ocr311-card-title\">Periodic Trends<\/p>\n            <p class=\"ols-ocr311-card-desc\">The Periodic Table as an arrangement by proton number, periodicity, blocks, and the trends in atomic radius, ionisation energy and melting point across Periods 2 and 3 (3.1.1 (a), (b), (g)).<\/p>\n            <span class=\"ols-ocr311-card-cta\">Start revising<svg viewBox=\"0 0 16 16\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 8h10M9 4l4 4-4 4\"><\/path><\/svg><\/span>\n          <\/div>\n        <\/a>\n        <!-- Card 3: Metallic Bonding (2.2.2) -->\n        <a class=\"ols-ocr311-card ols-ocr311-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/2-2-2-bonding-and-structure\/metallic-bonding\/\">\n          <div class=\"ols-ocr311-card-img-wrap\">\n            <div class=\"ols-ocr311-visual ols-ocr311-visual--metallic\">\n              <div class=\"ols-ocr311-visual-panel\">\n                <div class=\"ols-ocr311-visual-kicker\">Lattices<\/div>\n                <div class=\"ols-ocr311-visual-main\">Metallic<br>Bonding<\/div>\n                <div class=\"ols-ocr311-config-line\" aria-hidden=\"true\"><span>M\u207a e\u207b<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-ocr311-card-num\">3<\/div>\n          <\/div>\n          <div class=\"ols-ocr311-card-body\">\n            <p class=\"ols-ocr311-card-title\">Metallic Bonding (2.2.2)<\/p>\n            <p class=\"ols-ocr311-card-desc\">Giant metallic lattices and the properties of metals (3.1.1 (d), (f)), on the 2.2.2 Bonding and Structure pages.<\/p>\n            <span class=\"ols-ocr311-card-cta\">Start revising<svg viewBox=\"0 0 16 16\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 8h10M9 4l4 4-4 4\"><\/path><\/svg><\/span>\n          <\/div>\n        <\/a>\n        <!-- Card 4: Giant Covalent Structures (2.2.2) -->\n        <a class=\"ols-ocr311-card ols-ocr311-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/2-2-2-bonding-and-structure\/covalent-bonding\/giant-covalent-structures\/\">\n          <div class=\"ols-ocr311-card-img-wrap\">\n            <div class=\"ols-ocr311-visual ols-ocr311-visual--giant\">\n              <div class=\"ols-ocr311-visual-panel\">\n                <div class=\"ols-ocr311-visual-kicker\">Lattices<\/div>\n                <div class=\"ols-ocr311-visual-main\">Giant<br>Covalent<\/div>\n                <div class=\"ols-ocr311-config-line\" aria-hidden=\"true\"><span>C Si<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-ocr311-card-num\">4<\/div>\n          <\/div>\n          <div class=\"ols-ocr311-card-body\">\n            <p class=\"ols-ocr311-card-title\">Giant Covalent Structures (2.2.2)<\/p>\n            <p class=\"ols-ocr311-card-desc\">Diamond, graphite, graphene and silicon and their properties (3.1.1 (e), (f)), on the 2.2.2 Bonding and Structure pages.<\/p>\n            <span class=\"ols-ocr311-card-cta\">Start revising<svg viewBox=\"0 0 16 16\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 8h10M9 4l4 4-4 4\"><\/path><\/svg><\/span>\n          <\/div>\n        <\/a>\n        <!-- Card 5: Structure Types (2.2.2) -->\n        <a class=\"ols-ocr311-card ols-ocr311-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/2-2-2-bonding-and-structure\/structure-types\/\">\n          <div class=\"ols-ocr311-card-img-wrap\">\n            <div class=\"ols-ocr311-visual ols-ocr311-visual--ionic\">\n              <div class=\"ols-ocr311-visual-panel\">\n                <div class=\"ols-ocr311-visual-kicker\">Compare<\/div>\n                <div class=\"ols-ocr311-visual-main\">Structure<br>Types<\/div>\n                <div class=\"ols-ocr311-config-line\" aria-hidden=\"true\"><span>NaCl Cu C I\u2082<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-ocr311-card-num\">5<\/div>\n          <\/div>\n          <div class=\"ols-ocr311-card-body\">\n            <p class=\"ols-ocr311-card-title\">Structure Types (2.2.2)<\/p>\n            <p class=\"ols-ocr311-card-desc\">The four lattice types compared: melting point, conductivity and solubility from structure and bonding (3.1.1 (f), (g)).<\/p>\n            <span class=\"ols-ocr311-card-cta\">Start revising<svg viewBox=\"0 0 16 16\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 8h10M9 4l4 4-4 4\"><\/path><\/svg><\/span>\n          <\/div>\n        <\/a>\n      <\/div>\n    <\/div>\n  <\/section>\n  <!-- SPECIFICATION -->\n  <section class=\"ols-ocr311-spec-section\">\n    <div class=\"ols-ocr311-container\">\n      <div class=\"ols-ocr311-spec-wrap\">\n        <div class=\"ols-ocr311-spec-pill\">Specification Coverage<\/div>\n        <h2 class=\"ols-ocr311-spec-heading\">3.1.1 Periodicity &#8211; OCR A Level Chemistry A<\/h2>\n        <p class=\"ols-ocr311-spec-intro-text\">The following OCR A learning outcomes state what candidates should be able to do. Wording is taken from the OCR A Level Chemistry A (H432) specification.<\/p>\n        <h3 class=\"ols-ocr311-spec-group-title\">3.1.1 Periodicity<\/h3>\n        <div class=\"ols-ocr311-spec-rows\">\n          <div class=\"ols-ocr311-spec-row ols-ocr311-spec-row--light\">\n<div class=\"ols-ocr311-spec-code\">3.1.1(a)<\/div>\n<div class=\"ols-ocr311-spec-text\"><strong>The Periodic Table<\/strong><div class=\"ols-ocr311-spec-sub-list\"><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">i<\/div><div class=\"ols-ocr311-spec-sub-text\">the periodic table as the arrangement of elements by increasing atomic (proton) number<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">ii<\/div><div class=\"ols-ocr311-spec-sub-text\">the periodic table as the arrangement of elements in periods showing repeating trends in physical and chemical properties (periodicity)<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">iii<\/div><div class=\"ols-ocr311-spec-sub-text\">the periodic table as the arrangement of elements in groups having similar chemical properties<\/div><\/div><\/div><\/div>\n<\/div>\n          <div class=\"ols-ocr311-spec-row ols-ocr311-spec-row--mid\">\n<div class=\"ols-ocr311-spec-code ols-ocr311-spec-code--mid\">3.1.1(b)<\/div>\n<div class=\"ols-ocr311-spec-text\"><strong>Periodic trend in electron configuration and blocks<\/strong><div class=\"ols-ocr311-spec-sub-list\"><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">i<\/div><div class=\"ols-ocr311-spec-sub-text\">the periodic trend in electron configurations across Periods 2 and 3 (see also 2.2.1 d)<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">ii<\/div><div class=\"ols-ocr311-spec-sub-text\">classification of elements into s-, p- and d-blocks<\/div><\/div><\/div><\/div>\n<\/div>\n          <div class=\"ols-ocr311-spec-row ols-ocr311-spec-row--light\">\n<div class=\"ols-ocr311-spec-code\">3.1.1(c)<\/div>\n<div class=\"ols-ocr311-spec-text\"><strong>Ionisation energies<\/strong><div class=\"ols-ocr311-spec-sub-list\"><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">i<\/div><div class=\"ols-ocr311-spec-sub-text\">first ionisation energy (removal of 1 mol of electrons from 1 mol of gaseous atoms)<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">ii<\/div><div class=\"ols-ocr311-spec-sub-text\">successive ionisation energy<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">i)-a<\/div><div class=\"ols-ocr311-spec-sub-text\">explanation of the trend in first ionisation energies across Periods 2 and 3, in terms of attraction, nuclear charge and atomic radius<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">i)-b<\/div><div class=\"ols-ocr311-spec-sub-text\">explanation of the trend in first ionisation energies down a group, in terms of attraction, nuclear charge and atomic radius<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">ii)-a<\/div><div class=\"ols-ocr311-spec-sub-text\">prediction from successive ionisation energies of the number of electrons in each shell of an atom<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">ii)-b<\/div><div class=\"ols-ocr311-spec-sub-text\">prediction from successive ionisation energies of the group of an element<\/div><\/div><\/div><\/div>\n<\/div>\n          <div class=\"ols-ocr311-spec-row ols-ocr311-spec-row--mid\">\n<div class=\"ols-ocr311-spec-code ols-ocr311-spec-code--mid\">3.1.1(d)<\/div>\n<div class=\"ols-ocr311-spec-text\"><strong>Metallic bonding<\/strong><div class=\"ols-ocr311-spec-sub-list\"><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">i<\/div><div class=\"ols-ocr311-spec-sub-text\">explanation of metallic bonding as strong electrostatic attraction between cations (positive ions) and delocalised electrons<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">ii<\/div><div class=\"ols-ocr311-spec-sub-text\">explanation of a giant metallic lattice structure, e.g. all metals<\/div><\/div><\/div><\/div>\n<\/div>\n          <div class=\"ols-ocr311-spec-row ols-ocr311-spec-row--light\">\n<div class=\"ols-ocr311-spec-code\">3.1.1(e)<\/div>\n<div class=\"ols-ocr311-spec-text\"><strong>Giant covalent lattices<\/strong><div class=\"ols-ocr311-spec-sub-list\"><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">i<\/div><div class=\"ols-ocr311-spec-sub-text\">explanation of the solid giant covalent lattice of diamond as a network of atoms bonded by strong covalent bonds<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">ii<\/div><div class=\"ols-ocr311-spec-sub-text\">explanation of the solid giant covalent lattice of graphite as a network of atoms bonded by strong covalent bonds<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">iii<\/div><div class=\"ols-ocr311-spec-sub-text\">explanation of the solid giant covalent lattice of graphene as a network of atoms bonded by strong covalent bonds<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">iv<\/div><div class=\"ols-ocr311-spec-sub-text\">explanation of the solid giant covalent lattice of silicon as a network of atoms bonded by strong covalent bonds<\/div><\/div><\/div><\/div>\n<\/div>\n          <div class=\"ols-ocr311-spec-row ols-ocr311-spec-row--mid\">\n<div class=\"ols-ocr311-spec-code ols-ocr311-spec-code--mid\">3.1.1(f)<\/div>\n<div class=\"ols-ocr311-spec-text\"><strong>Properties of giant lattices<\/strong><div class=\"ols-ocr311-spec-sub-list\"><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">i<\/div><div class=\"ols-ocr311-spec-sub-text\">explanation of the melting and boiling points of giant metallic lattices in terms of structure and bonding<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">ii<\/div><div class=\"ols-ocr311-spec-sub-text\">explanation of the solubility of giant metallic lattices in terms of structure and bonding<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">iii<\/div><div class=\"ols-ocr311-spec-sub-text\">explanation of the electrical conductivity of giant metallic lattices in terms of structure and bonding<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">iv<\/div><div class=\"ols-ocr311-spec-sub-text\">explanation of the melting and boiling points of giant covalent lattices in terms of structure and bonding<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">v<\/div><div class=\"ols-ocr311-spec-sub-text\">explanation of the solubility of giant covalent lattices in terms of structure and bonding<\/div><\/div><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\">vi<\/div><div class=\"ols-ocr311-spec-sub-text\">explanation of the electrical conductivity of giant covalent lattices in terms of structure and bonding<\/div><\/div><\/div><\/div>\n<\/div>\n          <div class=\"ols-ocr311-spec-row ols-ocr311-spec-row--light\">\n<div class=\"ols-ocr311-spec-code\">3.1.1(g)<\/div>\n<div class=\"ols-ocr311-spec-text\"><strong>Melting points across Periods 2 and 3<\/strong><div class=\"ols-ocr311-spec-sub-list\"><div class=\"ols-ocr311-spec-sub-row\"><div class=\"ols-ocr311-spec-sub-code\"><\/div><div class=\"ols-ocr311-spec-sub-text\">explanation of the variation in melting points across Periods 2 and 3 in terms of structure and bonding (see also 2.2.2 o)<\/div><\/div><\/div><\/div>\n<\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n  <script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"WebPage\",\n      \"@id\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/3-1-1-periodicity\/#webpage\",\n      \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/3-1-1-periodicity\/\",\n      \"name\": \"3.1.1 Periodicity - OCR A Level Chemistry A Revision Notes\",\n      \"description\": \"OCR A Level Chemistry A 3.1.1 revision notes: the Periodic Table, ionisation energies, periodic trends in atomic radius and melting point, with links to metallic and giant covalent lattices.\",\n      \"isPartOf\": {\n        \"@type\": \"WebSite\",\n        \"name\": \"Online Learning System\",\n        \"url\": 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bonding (3.1.1 (f), (g)).\",\n            \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/2-2-2-bonding-and-structure\/structure-types\/\",\n            \"provider\": {\n              \"@type\": \"Organization\",\n              \"name\": \"Online Learning System\",\n              \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/\"\n            }\n          }\n        }\n      ]\n    }\n  ]\n}\n<\/script>\n\n<\/div>\n\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Revision Notes \/ A Level Chemistry \/ OCR \/ 3.1.1 Periodicity OCR A Level Chemistry A &#8211; Module 3 Periodic Table and Energy 3.1.1Periodicity Section 3.1.1 covers the arrangement of the Periodic Table, periodic trends in electron configuration, first and successive ionisation energies, and the structures and melting points of the elements across Periods 2 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