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


Sagot :

Answer:

Br

Explanation:

looking at all options:

Al = Al3+ + 3e-

K=K+ + e-

Cu = Cu2+ + 2e-

Br + 2e- = Br2-

Cr = Cr3+ + 3e-

answer is Br.