Question

A calcium atom tends to lose two electrons to become a calcium ion, while a chlorine atom tends to gain one electron to become a chloride ion. Given this information, write out the chemical formula for the compound calcium chloride.

Answer 1

Answer:

CaCl2.

Explanation:

Ions may be defined as the elements that acquires positive or negative charge over them. Two main types of ions are cations and the anions that are formed by the gain or loss of the element.

The calcium has two positive charge over it and contains Ca²+. The chloride contains one negative charge over it and exists as $Cl^{-1}$.

The chemical formula will be :

Ca²+     $Cl^{-1}$.

+2               -1  (cross multiply)

CaCl2.

Thus, the formula is CaCl2.

Answer 2

Answer: CaCl2

Explanation: the combining power will cross each other giving 1 as the subscript of calcium and 2 as the subscript of chlorine.