Question

Pauling's electronegativity values for elements are useful in predicting

• A. polarity of the molecules
• B. position in the emf series
• C. coordination numbers
• D. dipole moments

Answer 1

Answer: (A)

polarity of the molecules

Answer 2

Pauling's electronegativity values are useful in determination of polarity of the bond in molecules. If electronegativity difference is zero, then the molecule is non-polar otherwise it is polar. $\, \, \, \, \, \, \, \, \, \, \, \, x_A -x_B =0.028 \sqrt \Delta E$ $x_A \, and \, x_B$ are electronegativities of the atoms A and B respectively. While, $\Delta$E = actual bond energy $-\sqrt{E_{A -A} \times E_{B-B}}$