At its boiling point (280°C) and at atmospheric pressure, phosphorus has a gas density of 2.7 g L -1 . Under the same conditions, nitrogen has a gas density of 0.62 g L -1 . How many atoms of...

At its boiling point (280°C) and at atmospheric pressure, phosphorus has a gas density of 2.7 g L^-1
. Under the same conditions, nitrogen has a gas density of 0.62 g L^-1
. How many atoms of phosphorus are there in one phosphorus molecule under these conditions?