Assertion:- `N_(2)^(+)` is more stable than `N_(2)^(-)`
Reason:- `N_(2)^(+)` has less electrons in antibonding orbital .

Assertion: PbCl_(2) is more stable more stable than PbCl_(4) Reason: PbCl_(4) is strong oxidizing agent.

Assertion(A) - H_2 molecule is more stable than He molecule. Reason(R)-The occupation of antibonding orbitals stabilises the molecules.

Assertion : N_(2) is less reactive than P_(4) . Reason : Nitrogen has more electron gain enthalpy than phosphorus.

Assertion (A): N_(2) is less reactive than P_(4) Reason (R): The electron gain enthalpy of nitrogen is more positive than phosphorous.

Assertion(A) - Fluorine molecule has bond order one. Reason(R)-The number of electrons in antibonding molecular orbital is two less than that of bonding molecular orbitals.