Question

Calculate the radius of nucleus of mass number 216

Answer 1

R = k A^1/3

where k= 1.1*10^-15m =1.1 fermi
and A equals Atomic mass

R=1.1*6 fermi =6.6 fermi

Answer 2

R = R₀A¹/³ 
A = Atomic no.
R₀ = 1.1 * 10⁻¹⁵
216¹/³ = 6 * 1.1 * 10⁻¹⁵ = 6.6 * 10⁻¹⁵