Question

question 5 (1 point) when cobalt (ii) cation combines with chloride anion, how many chloride anions will be in the formula? a) 3 b) 7 c) 2 d) 1

Explanation:

Step1: Determine ion charges

Cobalt (II) cation has a charge of +2 ($Co^{2 +}$), and chloride anion has a charge of - 1 ($Cl^{-}$).

Step2: Balance charges

To balance the +2 charge of cobalt (II) cation, we need 2 chloride anions since $2\times(-1)+2 = 0$.

Answer:

C. 2