Question

question 13 of 25 calcium (ca) has an atomic number of 20. it can form an ion by losing 2 electrons. what would its charge be? a. 2+ b. 22 c. 2- d. 18

Explanation:

Step1: Recall electron - charge relationship

Electrons have a negative charge. Losing electrons makes an ion positively charged.

Step2: Determine charge from number of electrons lost

Since 2 electrons are lost, the charge is $2+$.

Answer:

A. 2+