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The mass number of a nucleus is 216. The...

The mass number of a nucleus is `216`. The size of an atom without changing its chemical properties are called

A

`7.2xx10^(-13) cm`

B

`7.2xx10^(-11)cm`

C

`7.2xx10^(-10) cm`

D

`3.6xx10^(-11)cm`

Text Solution

Verified by Experts

The correct Answer is:
A
`R=R_(0)A^(1//3)=1.2xx10^(-13)xx(216)^(1//3)=7.2xx10^(-13)cm`
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