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.(4)Be^(7) captures a K electron into it...

`._(4)Be^(7)` captures a K electron into its nucleus .What is the mass number and atomic number of the nuclide formed ?

A

`3,7`

B

`4,8`

C

`3,6`

D

`4,7`

Text Solution

Verified by Experts

The correct Answer is:
A
`_(4)He^(7) + _(-1)e^(0) rarr _(3)LI^(7)`
So atomic number `= 3`mass number `= 7`
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