A) \[{{10}^{-10}}\]
B) \[{{10}^{-15}}\]
C) \[{{10}^{5}}\]
D) \[{{10}^{-5}}\]
Correct Answer: C
Solution :
The radius of an atom of any element is of the order of \[{{10}^{-10}}\] 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\[=\frac{{{10}^{-10}}}{{{10}^{-15}}}={{10}^{5}}.\]
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