An atom that has lost or gained electrons becomes an

ion

Explanation:

When an atom gains or loses an electron, it attains a net charge and becomes an ion.

When electrons are lost (or donated), the resulting ion is called cation. When electrons are gained, the resulting ion is called an anion. Thus, cations have a net positive charge, while anions have a net negative charge.

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence

the objects have the same charge.