Question

which of the following statements is true about ions? cations form when an atom gains electrons cations form when an atom loses electrons anions form when an atom gains protons anions form when an atom loses protons

Explanation:

Cations are positively - charged ions. An atom becomes a cation when it loses electrons, as electrons are negatively charged. Anions are negatively - charged ions and form when an atom gains electrons, not when an atom gains or loses protons (protons are in the nucleus and not easily gained or lost in normal chemical reactions to form ions).

Answer:

B. cations form when an atom loses electrons