Question

In which compound is the ratio of metal ions to nonmetal ions 1 to 2 a)calcium oxide b)calcium sulfide c) calcium bromide d) calcium phosphide

Answer 1

Answer: c) calcium bromide

Explanation: a) Calcium oxide: It is represented by $CaO$ which contains $Ca^{2+}$ as a metal and $O^{2-}$ as a non metal. Thus the ratio of metal to non metal ions is 1:1.

b) Calcium sulfide: It is represented by $CaS$ which contains $Ca^{2+}$ as a metal and $S^{2-}$ as a non metal. Thus the ratio of metal to non metal ions is 1:1.

c) Calcium bromide: It is represented by $CaBr_2$ which contains $Ca^{2+}$ as a metal and $Br^{-}$ as a non metal. Thus the ratio of metal to non metal ions is 1:2.

d) Calcium phosphide: It is represented by $Ca_3P_2$ which contains $Ca^{2+}$ as a metal and $P^{3-}$ as a non metal. Thus the ratio of metal to non metal ions is 3:2.