Give reasons for the increase in ionisation energy across a period in the table of elements.

Marks awarded for mention of outer most shells of electrons, shielding effects along side distance from nucleus of respective atoms as well as increased positive charge due to increased number of protons present in nucleus of larger atoms.

JS

Related Chemistry A Level answers

All answers ▸

Giving the electronic configurations for each element, predict the trend in 1st ionisation energies going across period 2 from Lithium to Neon.


How would you find out whether a reaction is feasible?


Why do elements give off coloured light when heated?


Explain the relative resistance to bromination of benzene compared to phenol and compared to cyclohexene.