Fill in the blanks in the following sentences: (i) Two atoms of the same element combine to form a molecule. The bond between them is known as .......... bond. (ii) Two chlorine atoms combine to form a molecule. The bond between them is known as .......... (iii) In forming oxygen molecule, .......... electrons are shared by each atom of oxygen. (iv) In forming N 2 molecule, .......... electrons are shared by each atom of nitrogen. (v) The number of single covalent bonds in C 2 H 2 molecule are ............... (vi) Melting points and boiling points of ionic compounds are generally ........than those of covalent compounds.

Question

Philoid · Accepted Answer

(i) Two atoms of the same element combine to form a molecule. The bond between them is known as covalent bond.

(ii) Two chlorine atoms combine to form a molecule. The bond between them is known as covalent.

(iii) In forming oxygen molecule, two electrons are shared by each atom of oxygen.

(iv) In forming N₂ molecule, three electrons are shared by each atom of nitrogen.

(vi) The number of single covalent bonds in C₂H₂ molecule are two.

(vi) Melting points and boiling points of ionic compounds are generally higher than those of covalent compounds.