Classify each molecule as polar or nonpolar.(a) N2H2(b) H2O2(c) CF4(d) NO2

PROBLEM 92P

Classify each molecule as polar or nonpolar.

(a) N2H2

(b) H2O2

(c) CF4

(d) NO2

                                                               Step by Step Solution

Step 1 of 4

a)

Polar compounds:

The electronegative difference between the species in the range of 0.3 to 1.4 are considered as polar compounds.

Example: HCl and HF

Non polar compounds:

The electronegative differences between the species in the range of 0 to 0.2 are considered as non polar compounds.

The given molecule  .

The electronegativity of nitrogen - 3.0

The electronegativity of hydrogen - 2.1

Total difference - 0.9

The shape of molecules with bond dipoles  is as follows.

Shape of the molecule is non linear.

In the trans form of the molecule the net dipole moment is zero therefore, the given molecule is non - polar in the transform.

The net dipole moment in non - zero is cis form.

Therefore, the given molecule is polar in the cis form.

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