The standard state of phosphorus at 25∘c is p4. this molecule has four equivalent p atoms, no double or triple bonds, and no expanded octets. draw its lewis structure. draw the molecule by placing atoms on the grid and connecting them with bonds. include all non-bonding electrons.

Explanation:

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

Phosphorus in its standard from exist as molecule.the hybridized phosphorus atom lies in the corner of the regular tetrahedron. Each phosphorus atom is connected to three other phosphorus atoms.

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.