Question

 

1. Which type of chemical bond involves the transfer of electrons?

A. Ionic

B. Polar covalent

C. Nonpolar covalent

2. A polar covalent bond will form between which two atoms?

A. Beryllium and fluorine (group 1 and group 7)

B. Hydrogen and chlorine (group 7)

C. Sodium and oxygen (group 1 and group 6)

D. Fluorine and fluorine (group 7)

3. A nonpolar covalent bond will form between which two atoms?

A. Potassium and chlorine

B. Hydrogen and chlorine

C. Sodium and bromine

D. Chlorine and chlorine

4. As the difference in electronegativity between two atoms increases, the polarity of a bond between those two atoms

A. increases.

B. decreases.

C. remains the same.

Answer 1

The ioinic bond is the bond which involves transfer of electrons from anion to cation. Compounds which makes these types of bonds are NaCl, kCl,CaCO3 etc.

And, covalent bond is the bond form by sharing of electrons.

Example includes: all organic compounds

Therefore option A is the correct choice.

2) A polar covalent bond forms between two non metals having a greater electronegative difference.

So, among these hydrogen and chlorine which are both non metals and also having a vast electronegative difference will form covalent bond.

Therefore option B is the correct choice.

3)

A non polar covalent bond is a bond that have no charge on it.

Two atoms of same element or two atoms of different element with smaller electronegativity difference generally forms these kind of bonds.

So option D ie Cl-Cl is the correct choice.

4)

As we discussed above, increase in electronegativity difference increases the polarity of the compound.

So, option A is the correct choice.