CH.2 Electrons in atoms

Question 1

First Ionization Energy

Answer 1

the amount of energy needed to remove 1 mole of electrons from 1 mole of atoms of an element in the gaseous state to form 1 mole of gaseous ions.

Question 2

Factors that affect ionization energy

Answer 2

1. Size of nuclear charge
2. Distance of outer electrons from the nucleus.
3. Shielding effect of inner electrons
4. Spin pair repulsion