Neptunium Element Number 93 Np 

Np 93  metal AW: 237   D: 20.45  MP:1179  BP:7232  unstable Half life 2.144x 10 to the 6th years.

Neptunium

 

 

 Plutonium Element Number 94 Pu

Pu 94 metal AW:244   D:16.63   MP:1182   BP:5842  unstable half  life 8.08x10 to the 7th years 

Plutonium