What is thhe process of a metal losing an electron?

Answer 1

an negative charge occurs :)

Answer 2

When a metal loses an electron, it undergoes oxidation. During this process, the metal atom loses one or more electrons to form a positively charged ion called a cation. This occurs when the metal atom donates its outermost electrons to another atom or molecule with a higher affinity for electrons.

Answer 3

ionization

Answer 4

oxidation