Chemical bonding 4.2

Question 1

Covalent Bonding

Answer 1

Electrostatic attraction between positive nuclei and the shared pair of electrons.

Question 2

Non polar molecules with polar bonds

Answer 2

1) CCl4, Carbontetrachloride, In this molecule the bond polarities cancel out each other due to the molecular geometry therefore the molecule has no net dipole movement.

Question 3

Polar molecule example

Answer 3

1) CH2Cl2, dichloromethane, In this molecule the bond polarities dont cancel out each other therefore it has net dipole movement.

Question 4

More examples of Non polar molecules with polar bonds

Answer 4

1) CO2

2) BF3

Question 5

Examples of polar molecules

Answer 5

1) H20

2) NH3