Elements : combine to form compounds : : Compounds : ________

A reaction in which two or more reactants combine to form a compound is known as ______.

When sodium combines with chlorine .it forms an edible compound named ______.

Elements of group 13 mainly form covalent compounds because _________

Two elements sometimes can form more than one compound .

Most organic compounds form ______ bonds .

An element A occupies group number 15 and period number 3, reacts with chlorine to give compound B. The compounds B on hydrolysis gives a dibasic acid C. The compound C on heating undergoes auto oxidation and reduction to give a tribasic acid D. Identify the elements A, compounds B, C and D. Write the reactions.

Deuterium with salt and other compounds forms _________