- Created by: DavidW001
- Created on: 01-05-19 14:54
Down A Group:
-Nuclear charge increases
-More Quantum shells are added so outermost electron is farther from the nucleus
-Due to added Quantum shells, there is an increased level of electron - electron repulsion (shielding) resulting in a decreased attraction to the nucleus.
Therefore, Ionisation Energy decreases down a group.
Across a period:
-Nuclear Charge increases
-No more quantum shells
-Increased electron - electron repulsion (shielding
Nuclear Charge is more significant. Therefore, Ionisation energy Increases across a period