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)

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 $-\sqrt{E_{A-A}\times E_{B-B}}$