Question

- The stable nucleus that has a radius half that of Fe56 is :
(A) Li7
(B) Na21
(C) S16
(D) Ca40​

Answer 1

Answer:

A

Explanation:

​The nuclear radius ​R = R0 A1/3

or R ∝ A1/3

or R3 ∝ A ⇒ A ∝ R3

∴

A2

=  

R2

3

A1 R1

=  

R1/2

3 =

1

R1  8

A2 =

A1

=

56

= 7

8 8