96 – Cm – Curium

This is trinitite, a mineral from the area of the first atomic bomb test in New Mexico. The sand was melted by the heat and encloses traces of Curium, created from Plutonium by neutron capture. Amount: trinitite 0.2 g, Curium fraction unknown.

Physical and chemical data
Atomic mass	247.0703
Density	13.51 g·cm^-3
Melting point	1345 °C
Boiling point	? °C
Abundance	0 %
Electronegativy	1.2
Oxydation levels	4, [3]
Electron configuration	[Rn]5f7 6d 7s2