Module 7 and 8

Question 1

Definition of first ionisation enthalpy

Answer 1

Energy needed to remove 1 mole of electrons from 1 mole of gaseous atoms to make a
mole of gaseous 1 + ions

Question 2

Equation for first ionisation enthalpy and is it endothermic reaction or exothermic?

Answer 2

X (g) → X + (g) + e -
It’s an endothermic reaction

Question 3

What 3 factors affect the ionisation energy?
(factors needed to be referred in a question ab ionisation energy)

Answer 3

Atomic radius
Nuclear charge
Electron shielding