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The radius of ""(Z) M^(A) nucleus is (ou...

The radius of `""_(Z) M^(A)` nucleus is (outer most configuration `3s^(2) 3p^(1)` and A + Z = 40)

A

4.2 FM

B

`1.4 xx root340 FM`

C

`1.4 xx root2 40 FM`

D

`1.4 xx 40` F M

Text Solution

Verified by Experts

The correct Answer is:
A
`r = r_0 (A^(1//3)) 1.4 xx (27)^(1//3) = 1.4 xx 3 = 4.2`
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