2020-21 CCS 8SCI SMA 10 P.1.1, 1.22 of 18 Atoms of elements X and Y react to form a compound. The atoms present before the reaction and the atoms left unreacted after the reaction are shown below.

THE ANSWER IS : is D because A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) composed of atoms from more than one element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound.

Hno3(aq) → h+(aq) + no3−(aq). picture ii best represents the strong acid hno3. strong acids are strong electrolytes