The density of phosphorus vapour at STP is `5.54 " gL"^(-1)`. Hence, molecular formula of phosphorus is

What is the molecular formula of white phosphorus?

Phosphorus vapours consist of:

The density of phosphorus vapour at 310^(@)C and 775 torr is 2.64 g dm^(-3) . What is the molecular formula of phosphorus ?

The density of phosphorus vapour at 310^(@)C and 775 torr is 2.67 g dm^(-3) . What is the molecular formula ?