Question

Number of oxygen atoms attached phosphorus atom in $P_4{O}_6$ molecule are:

• A. 6
• B. 4
• C. 3
• D. 2

Answer 1

Answer: (C)

No. of oxygen atoms attached with phosphorus = 3

Phosphorus trioxide is the chemical compound with the molecular formula $P_4{O}_6$. Although the molecular formula suggests the name tetraphosphorus hexoxide, the name phosphorus trioxide preceded the knowledge of the compound's molecular structure, and its usage continues today.

Hence,option C is correct.