(1) $\text{P}_4$ is reactive because of its highly strained tetrahedral structure.
(2) $\text{P}_4$ has six P - P single bonds
(3) $\text{P}_4$ has four P - P single bonds
(4) $\text{P}_4$ has four lone pairs of electrons
(5) $\text{P}_4$ has a PPP angle of $60^{\circ}$
$\begin{array}{1 1} \text{Only (1), (2), and (3) are correct} \\ \text{Only (3) is incorrect, while (1), (2), (4) and (5) are correct} \\ \text{Only (4) and (5) are correct} \\ \text{ Only (1), (3), (4) and (5) are correct, while (2) is incorrect}\end{array}$
