Trends In Ionisation Energy

Question 1

Ionisation energy……… Across a period and why?

Answer 1

Increases
Because more protons so stronger attraction
Same energy level so little extra sheilding

Question 2

What are the drops in ionisation energy between groups 2 and 3 due to

Answer 2

Al used 3p orbital so further away
More shielding
Provides evidence for sub shells

Question 3

What is the drop between groups 5 and 6 due to?

Answer 3

Electron repulsion

Easier to remove from orbital containing two electrons

Question 4

Ionisation energy…………. Down group 2 and why?

Answer 4

Decreases
Extra electron shell so shielding
Outer electrons are further away