Pearson Edexcel IAL Chemistry AS 2.10 Factors affecting ionisation energy
Pearson Edexcel IAL Chemistry AS 2.10 Factors affecting ionisation energy
Practise explaining first ionisation energy trends using nuclear charge, shielding, subshell energy and paired-electron repulsion.
How this is tested
- compare first ionisation energies using nuclear attraction, shielding and atomic radius
- explain Be/B or Mg/Al drops by removal from a higher-energy p subshell
- explain N/O or P/S drops using paired p electrons and increased repulsion