Question

The transition metal copper (Cu) most often forms 1 and 2 ions. Which chemical formulas below are the possible compounds formed between these copper ions and the non-metal selenium (Se)?

1) CuSe
2) Cu₂Se
3) CuSe2
4) CuSe3

Answer 1

Copper (Cu) most often forms 1 and 2 ions. The possible compounds formed between copper ions and selenium (Se) are CuSe and Cu₂Se.

Step-by-step explanation:

The transition metal copper (Cu) most often forms 1 and 2 ions. The chemical formulas that can be formed between these copper ions and the non-metal selenium (Se) are:

1. CuSe
2. Cu₂Se

The formula CuSe2 and CuSe3 are not possible compounds formed between copper ions and selenium.