Question

Which one of the following is most likely to gain electrons when forming an ion? Al

K
Cu
Br
Cr

Answer 1

Br

Step-by-step explanation:

looking at all options:

Al = Al3+ + 3e-

K=K+ + e-

Cu = Cu2+ + 2e-

Br + 2e- = Br2-

Cr = Cr3+ + 3e-

answer is Br.