What causes anions to have a negative charge? the loss of electrons the loss of protons the gaining of protons the gaining of electrons

Ions result from atoms or molecules that have gained or lost one or more valence electrons, giving them a positive or negative charge.

Explanation:

Those with a negative charge are called anions and those with a positive charge are called cations. ... It has more electrons than protons, resulting in the negative charge. hope this helps you :)