Question

Separation of the isotopes of uranium requires a physical method rather than a chemical method because:

• A. it is too dangerous to mix other chemical with uranium
• B. the isotopes are chemically the same element
• C. the isotopes differ in number of neutrons
• D. natural uranium contains only $0.7\%U^{235}$

Answer 1

The correct option is B the isotopes are chemically the same element

Uranium consists of three major type isotopes. Uranium - 234, Uranium - 235, Uranium - 238.

Since these are chemically identical, they could not be separated by a chemical method.

Hence, option $B$ is correct.