When a metal atom becomes an ion: A. It loses electrons and is oxidized B. It gains electrons and is reduced. C. It gains electrons and is oxidized. D. It loses electrons and is reduced.

 Question:

When a metal atom becomes an ion: 

A. It loses electrons and is oxidized 

B. It gains electrons and is reduced. 

C. It gains electrons and is oxidized. 

D. It loses electrons and is reduced.

Solution:

A. It loses electrons and is oxidized.

Explanation:

Metals lose electrons and loss of electrons is oxidation.