Question

unit 4l test 25 - 26
a beryllium (be²⁺) cation has

• gained two electrons.
• lost two protons.
• gained two protons.
• lost two electrons.

Explanation:

Cations are positively - charged ions. They form when an atom loses electrons. A beryllium ($Be^{2 + }$) cation has a + 2 charge, which means it has lost two electrons. Protons are not gained or lost in the formation of simple ions under normal chemical conditions.

Answer:

lost two electrons