Question

calcium atom loses electron to form the calcium ion. what is the valency of the ion​

Answer 1

Answer:

In order for Ca to become the ion Ca2+, the calcium atom needs to lose two electrons. (Electrons have a negative charge, so when an atom loses two electrons, its ion turns into more positive.) ... Therefore, the calcium atom transfers two valence electrons, one to each iodine atom, to form the ionic bond.

Answer 2

Explanation:

2

This is the correct answer