The radius of germanium ( Ge ) nuclide is measured to be twice the radius of ₄^9 Be . The number of nucleons in Ge will be

Step-by-step solution

Using radius of a nucleus, R A ^ 1 / 3 Where, A= number of nucleons aligned & R_ G e R_ B e = ( A_ G e A_ B e )^ 1 / 3 & 2= ( A_ G e A_ B e )^ 1 / 3 or, 2^3= A_ G e A_ B e ( R_ G e =2 R_ B e ) & 2^3= A_ G e 9 [ A_ B e =9 ] & A_ G e =2^3 9=8 9=72 aligned