Question

Approximate size of the nucleus of Nickel(mass=64,at. no.=28) is:
a)3fm b)4fm
c)5fm d)2fm..

PLZ GiVE THE CORRECT ANSWER

Answer 1

Nuclear size is given by the expression:

r = R0A1/3
where r is the radius of the nucleus
R0 is a constant whose value is equal to 1.25 fm         (fm is fermi units)
A is atomic mass of element

Thus for 64Ni, we have 
r  = 1.25 ×(64)1/3
r  = 1.25 ×4
r = 5 fm

Thus nuclear size  of Ni is 5 fm.

Answer 2

Hope this helps u......