What is the formula for copper (l) sulfide?

1 Answer
May 26, 2018

"Copper(I) sulfide"-="cuprous sulfide"-=Cu_2S

Explanation:

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

underbrace(Cu_2S)_"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...