What is the formula for copper (l) sulfide?

1 Answer
May 26, 2018

"Copper(I) sulfide"-="cuprous sulfide"-=Cu_2SCopper(I) sulfidecuprous sulfideCu2S

Explanation:

Copper metal can access two common oxidation states, i.e. Cu^+Cu+ or Cu^(2+)Cu2+:

underbrace(Cu_2S)_"copper(I) sulfide or cuprous sulfide"Cu2Scopper(I) sulfide or cuprous sulfide;

underbrace(CuS)_"copper(II) sulfide or cupric sulfide".

As are most sulfide salts, both salts would be as soluble as bricks in aqueous solution, and are poorly characterizable...