First Ionisation Energy

Question 1

Definition of first ionisation energy

Answer 1

Energy need to remove one mole of electron from one mole of gaseous atom

Question 2

Factors affecting ionisation energy

Answer 2

• nuclear charge
• atomic radius
• shielding

Question 3

Tend in ionisation energy moving across a period

Answer 3

Ionisation energies increase, this because it is easy to remove the outer most electron.

Question 4

ionisation energy down a group trend factors

Answer 4

Increase in shielding
Decrease in nuclear charge
Increase in atomic radius

Question 5

Trend of ionisation energy down a group

Answer 5

usually ionisation energy falls down a group as it gets easier to lose electrons as they get further away from the nucleus

Question 6

Shielding definition

Answer 6

It is the distance between the outer most electron and the nucleus. The lesser the shielding, the stronger the force between the outer most electron and the nucleus

Question 7

Atomic Charge Definition

Answer 7

Electrons closer to the nucleus will be more strongly attracted to the nucleus that one that is further away.

Question 8

Nuclear Charge definition

Answer 8

larger number of protons = higher the positive charge of the nucleus meaning the higher the attraction of the electrons