Density of plutonium

[kidia]

I want to calculate the density of plutonium,which has molar mass of 244 and atomic number 94.my problem is the volume can I use the standard volume of gas molecule 22.4?

[timo]

Assuming you mean "does 1 mol Pu take up roughly 22.4 l of volume?" then the answer is no. The 22.4 l/mol are an approximation for little-interacting gases at standard pressure and standard temperature. Just try it out for water. Hopefully, you´ll quickly see that a water density of ~2 g/l is not a realistic value.

[insane_alien]

if you want the value of it when its in a gaseuos state then yeah go ahead but remember that the temp has to be above the boiling point.