Question

An ionic compound will be formed by the combination of one of the following pairs of elements. This pair of elements is: (a) Chlorine and calcium (b) Calcium and sodium (c) Sulphur and carbon (d) Chlorine and fluorine

Answer 1

(a) is answer of above question

Answer 2

a) chlorine and calcium. That is CaCl2. Calcium chloride. Remaining others won't form ionic compound as in b) both are metals as of c) and d) both are non metals.