Electron Configuration

Question 1

What is first ionisation energy?

Answer 1

The heat energy required to remove 1 mole of electrons from 1 mole of gaseous ions to form 1 mole of positive gaseous ions. e.g. K(g) ——> K(g) + + e-.

Question 2

What is second ionisation energy?

Answer 2

The heat energy required to remove 1 mole of electrons from a uni positive gaseous ion to form a di positive gaseous ion.