Question

how much charge is required to convert
Cr^+3 to Cr

Answer 1

Answer:

3 charge required

Explanation:

I think

Answer 2

Explanation:

3 electrons are required

charge on 1 electron = 1.6 * 10^-19

so total charge required is 3*1.6 * 10^-19

= 4.8 * 10^-19 coulomb