If $R_0 = 1.2 ext{ fm}$, the radius of a nucleus of mass number $A = 125$ is:

Question

If $R_0 = 1.2	ext{ fm}$, the radius of a nucleus of mass number $A = 125$ is:

Professor PC Thomas Classes · Answer

Using the empirical formula $R = R_0 A^{1/3}$, $R = 1.2 	imes (125)^{1/3} = 1.2 	imes 5 = 6.0	ext{ fm}$.