Note that not all the elements are nuclear. The majority of them are nuclear and only some are in the solids catergory. 

Pastebin:

http://pastebin.com/6X6Mt28E

Taking Suggestions and feedback is appreciated! 

Elements: 

Caesium - decays and reacts w/ water

Liquid Caesium - decays and reacts w/ water

Palladium - adsorbs hydrogen

Radium - emites light and corrodes in water

Liquid Radium - emites light and corrodes in water

Magnesium - burns with a brigh white and blue flame

Francium - highly unstable and will react violently with water. 

V 0.1 - Release

V 0.2 - Bug fix

V 0.3 - Mort will now spawn when Caesium and Francium touch water and magnesium burns.

V 0.3.1 - Fixed bug in which MORT gets left over when Magnesium burns

@QuentinADay (View Post)

@tmo97 (View Post)

Thanks!