Molecule AB has a bond length of 1.67 Å and a dipole moment of 0.38 D. The fractional charge on each atom (absolute magnitude) is : (`e_0=4.082 xx 10^(-10)` esu)

Options

A. 0
B. 0.05
C. 0.5
D. 1

Answer

B

Explanation

`mu = q xx l, s 0.35 xx 3.335 xx 10^(-30) Cm = q xx 1.617 xx 10^(-10) m`
` q = (0.38 xx 3.335 xx 10^(-30) Cm)/(1.67 xx 10^(-10) m) = 0.759 xx 10^(-20) C (ID = 3.335 xx 10^(-30) Cm)`
With respect electron , `q = (0.759 xx 10^(-20))/(1.6 xx 10^(-19) ) = 0.05`