The designation Ca²⁺ means A) calcium has space for two more electrons. B) calcium has gained two more electrons. C) calcium has space for two more protons. D) calcium has gained two more protons.

Question

Quizplus · Accepted Answer

The designation Ca²⁺ indicates that Calcium (Ca) has one unpaired electron (U1), which can pair up with an electron from another atom to form a chemical bond. The 1st shell (S1) has two electrons (P12), and the 2nd shell (S1) has zero electrons (P0). Therefore, it means that Calcium has space for two more electrons.

The Designation Ca2+ Means

The Designation Ca²⁺ Means