8. The Periodic Table
- Syllabus
- 0620–2026–2027
- Section
- 8
- Level
- —
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In this section
Topic 8.1
8.1 Arrangement of elements
Objectives in this topic
8.1.1—Periodic Table as an arrangement of
- Describe Periodic Table as an arrangement of elements in periods and groups and in order of increasing proton number/atomic number
8.1.2—Change from metallic to non-metallic
- Describe change from metallic to non-metallic character across a period
8.1.3—Relationship between group number and
- Describe relationship between group number and the charge of the ions formed from elements in that group
8.1.4—Similarities in the chemical
- Explain similarities in the chemical properties of elements in the same group of the Periodic Table in terms of their electronic configuration
8.1.5—How the position of an element in the
- Explain how the position of an element in the Periodic Table can be used to predict its properties
8.1.6—Trends in groups, given information
- Identify trends in groups, given information about the elements
Topic 8.2
8.2 Group I properties
Objectives in this topic
8.2.1—Group I alkali metals, lithium, sodium
- Describe Group I alkali metals, lithium, sodium and potassium, as relatively soft metals with general trends down the group, (a) decreasing melting point (b) increasing density (c) increasing reactivity
8.2.2—Predict the properties of other
- Predict the properties of other elements in Group I, given information about the elements
Topic 8.3
8.3 Group VII properties
Objectives in this topic
8.3.1—Group VII halogens, chlorine, bromine
- Describe Group VII halogens, chlorine, bromine and iodine, as diatomic non-metals with general trends down the group, (a) increasing density (b) decreasing reactivity
8.3.2—Appearance of the halogens at r.t.p
- State the appearance of the halogens at r.t.p. as: (a) chlorine, a pale yellow-green gas (b) bromine, a red-brown liquid (c) iodine, a grey-black solid
8.3.3—Displacement reactions of halogens
- Describe/explain the displacement reactions of halogens with other halide ions
8.3.4—Predict the properties of other
- Predict the properties of other elements in Group VII, given information about the elements
Topic 8.4
8.4 Transition elements
Objectives in this topic
8.4.1—Transition elements as metals that
- Describe transition elements as metals that: (a) have high densities (b) have high melting points (c) form coloured compounds (d) often act as catalysts as elements and in compounds
8.4.2—Transition elements as having ions
- Describe transition elements as having ions with variable oxidation numbers, including iron(II) and iron(III)
Topic 8.5
8.5 Noble gases
Objectives in this topic
8.5.1—Group VIII noble gases as unreactive
- Describe Group VIII noble gases as unreactive, monatomic gases and explain this in terms of electronic configuration