IIT JEE , AIEEE Forum - Chemistry , Physical Chemistry

drishti_mishra

thankyou sir! i've understood my mistake.

1nand

Isotopes don't have equal atomic radii. In the Bohr theory expressions the electronic mass m should be replaced by

the reduced mass.

= M.m/M+m, where M is mass of nucleus and m is mass of electron. For different isotopes

are different, which results in slight differences in the atomic radii of isotopes.If we neglect m with respect to M, the

m.