# Which of the following about Phosphorus is incorrect?

(1) Does not form complexes

(2) Forms stable Halides

(3) Forms stable $\text{PCl}_5$ due to availability of vacant d-orbitals

(4) Forms unstable hydride $\text{PH}_3$ which is neutral

(5) Does not show allotropy

Answer: Statements (1) and (5) are incorrect.
Phosphorus forms complexes due to availability of vacant orbitals.
Phosphorus has White, Red and Black allotropes.