Question

For the following pairs of atoms, which one has the greater ionization energy. Then explain why. a. B and AI Why?b. B and F Why?

Answer 1

Ionization energy is the amount of energy required to remove an electron from an isolated atom.

Part (a)

Among Boron (B) and Aluminium (Al); the ionization energy of Boron is greater.

The ionization energy decreases down the period, Hence, the ionization energy of B is greater than Al.

Part (b)

Among Boron (B) and Fluorine (F); the ionization energy of the Fluorine is greater.

The ionization energy increases from left to right in a period. Hence, the ionization energy of F is greater than B.