A magnesium ion, Mg²⁺, has A) 12 protons and 13 electrons. B) 24 protons and 26 electrons. C) 12 protons and 10 electrons. D) 24 protons and 22 electrons. E) 12 protons and 14 electrons.

Question

Quizplus · Accepted Answer

Magnesium (Mg) has an atomic number of 12, indicating it has 12 protons. A magnesium ion with a 2+ charge (Mg^2+) means it has lost 2 electrons, so it has 10 electrons (12 - 2 = 10).

A Magnesium Ion, Mg2+, Has

A Magnesium Ion, Mg²⁺, Has