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Which is the longest lived isotope of Fr...

Which is the longest lived isotope of Francium?

A

`Fr^(223)`

B

`Fr^(222)`

C

`Fr^(224)`

D

`Fr^(225)`

Text Solution

Verified by Experts

The correct Answer is:
A

`Fr^(223)` has a half-life of only 21 minutes.
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