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9 of 9 objectives have lessons · 0 studied · 0 secure
What Cambridge says you should be able to do, in our words. Codes are the topic number plus the objective’s position.
Understand the terms shells, sub-shells and orbitals; principal quantum number (n); and ground state (limited to electronic configuration).
Scope for all of 1.3: every atom or ion described is in its ground state, and only the elements hydrogen to krypton are assessed.
Taught in: Shells, sub-shells and orbitals · 4 questions
Describe the number of orbitals that make up s, p and d sub-shells, and the number of electrons that can fill s, p and d sub-shells.
Scope for all of 1.3: ground-state atoms and ions only; elements hydrogen to krypton only.
Taught in: Shells, sub-shells and orbitals · 4 questions
Describe the order of increasing energy of the sub-shells within the first three shells and of the 4s and 4p sub-shells.
Scope for all of 1.3: ground-state atoms and ions only; elements hydrogen to krypton only.
Taught in: Shells, sub-shells and orbitals · 1 question
Describe electronic configurations, including the number of electrons in each shell, sub-shell and orbital.
Scope for all of 1.3: ground-state atoms and ions only; elements hydrogen to krypton only.
Taught in: Writing electronic configurations, Electrons in boxes and free radicals · 6 questions
Explain electronic configurations in terms of the energy of the electrons and inter-electron repulsion.
Scope for all of 1.3: ground-state atoms and ions only; elements hydrogen to krypton only.
Taught in: Writing electronic configurations, Electrons in boxes and free radicals · 3 questions
Determine the electronic configuration of atoms and ions from the atomic or proton number and charge, using either the full or the shorthand convention.
For example, Fe: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁶ 4s² (full electronic configuration) or [Ar] 3d⁶ 4s² (shorthand electronic configuration). Scope for all of 1.3: ground-state atoms and ions only; elements hydrogen to krypton only.
Taught in: Writing electronic configurations · 6 questions
Understand and use the electrons-in-boxes notation.
For example, Fe drawn as [Ar] followed by five 3d boxes (one holding a spin-paired pair of electrons, four holding one electron each) and a 4s box holding a spin-paired pair, with each electron shown as an arrow. Scope for all of 1.3: ground-state atoms and ions only; elements hydrogen to krypton only.
Taught in: Electrons in boxes and free radicals · 5 questions
Describe and sketch the shapes of s and p orbitals.
Scope for all of 1.3: ground-state atoms and ions only; elements hydrogen to krypton only.
Taught in: Shapes of s and p orbitals · 5 questions
Describe a free radical as a species with one or more unpaired electrons.
Scope for all of 1.3: ground-state atoms and ions only; elements hydrogen to krypton only.
Taught in: Electrons in boxes and free radicals · 2 questions