A-Level Edexcel Chemistry Orbital Filling in Sub-shells

Review A-Level Edexcel Chemistry orbital filling through p-orbital occupancy, single filling before pairing and paired-electron recognition.

Exam points

identify p-orbital occupancy after single filling and electron pairing in sub-shells

[Maximum number: 1]

The graph shows the first ionisation energies of some consecutive elements from Periods 2 and 3 of the Periodic Table.

The letters used to label the elements are not their chemical symbols.

Figure for Question 2.13—Orbitals in sub-shells: i each take a single electron before pairing up ii pair up with two electrons of opposite spin question 1 — Edexcel A-Level Chemistry AS

Which element has only one p orbital containing a pair of electrons?

element U

element V

element W

element X

All question bank results loaded

2.13—Orbitals in sub-shells: i each take a single electron before pairing up ii pair up with two electrons of opposite spin question 1