Answer the following:
a. Which electron takes part in bond formation?
b. What types of forces hold the atoms together in an ionic compound?
c. What change in energy takes place when a molecule is fomed from its atoms?
d. In terms of `IE` and `Delta_(eg)H^(ө)`, what types atoms combine to from ionic bond?
d. What types of orbitals can overlap to form a covalent bond.

Explanation

a. Valence electrons present in the outermost shell.
b. Electrostatic forces of attraction.
c. Lowering of energy takes place.
d. Metal atom with low `IE` and a non-metal with high `Delta_(eg)H^(ө)`.
e. Half-filled atomic orbitals containing electrons with opposite spins.