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Q. What are non-polar molecules? Give an example.
i) A non-polar molecule is one in that the centre of gravity of the positive charges coincides with the centre of gravity of the negative charges.
ii) Instance O2, N2, H2.
iii) The non-polar molecules don't have a permanent dipole moment.
Q. Why does the sky appear blue in colour? As-per to the Rayleigh's scattering law the shorter wavelengths are scattered much more than the longer wavelengths. The blue look o
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