Question

15 The electronegativity difference between the atoms in a molecule of HCl can be used to determine(1) the entropy of the atoms

(2) the atomic number of the atoms
(3) the first ionization energy of the atoms
(4) the polarity of the bond between the two atoms

Answer 1

(4) the polarity of the bond between the two atoms

The more important the difference in electronegativity is, the more polarized the bond is.

Answer 2

Answer : The correct option is, (4)

Explanation :

• Electronegativity : It is a chemical property which measures the ability of an atom to attract an electrons towards itself.

• Electronegativity difference : The difference in the electronegativity of the two atoms determines their polarity.

If the electronegativity difference between the two atoms is zero then the molecule is non-polar.

If the electronegativity difference between the two atoms is non-zero then the molecule is polar.

Therefore, the electronegativity difference between the atoms in a molecule of HCl can be used to determine the polarity of the bond between the two atoms