Calcium has a 2+ charge, and oxygen has a 2− charge. a lewis dot diagram should contain one calcium atom and one oxygen atom to show how these atoms form an ionic bond. true false

The answer is True

I took the test and it was correct

The given statement is true.

Explanation:

A bond formed by transfer of electrons between two atoms is known as an ionic bond.

Calcium is a metal that has atomic number 20 and its electronic configuration is 2, 8, 8, 2. Since, there are two valence electrons so, calcium loses its two extra electrons in order to gain stability.

Hence, neutral atom of calcium changes into .

Whereas oxygen is a non-metal that has atomic number 8 and its electronic configuration is 2, 6. Since, there are 6 valence electrons so, oxygen atom gains two electrons in order to gain stability.

Thus, neutral oxygen atom changes into .

Therefore, calcium will donate its two extra electrons to oxygen atom resulting in the formation of an ionic bond.

Hence, we can conclude that the given statement Calcium has a 2+ charge, and oxygen has a 2− charge. A Lewis dot diagram should contain one calcium atom and one oxygen atom to show how these atoms form an ionic bond, is true.