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Question

Chemistry Question on Structure of atom

Ratio of radius of atom to that of nucleus is of the order of:

A

10−10{{10}^{-10}}

B

10−15{{10}^{-15}}

C

105{{10}^{5}}

D

10−5{{10}^{-5}}

Answer

105{{10}^{5}}

Explanation

Solution

The radius of an atom of any element is of the order of 10−10{{10}^{-10}} metre and that of a nucleus is of the order of 1 metre (1 fermi). Hence, the ratio of radius of atom to that of nucleus =10−1010−15=105.=\frac{{{10}^{-10}}}{{{10}^{-15}}}={{10}^{5}}.