Question

1. if an atom gains an electron, it becomes a(n):

anion with a negative charge

new element

ion with a positive charge

isotope

clear all

Explanation:

To solve this, we recall ion formation: Atoms have equal protons (positive) and electrons (negative). Gaining an electron means more negative charges, so the atom becomes an anion (negative ion). A new element would require proton change, a positive ion (cation) loses electrons, and isotopes differ in neutrons, not electrons. So the correct option is the one about an anion with negative charge.

Answer:

A. Anion with a negative charge