The radius of which of the following orbit is same as that of the first Bohr's orbit of hydrogen atom.

rn=0.529  n2Z  AoFor hydrogen, n = 1 and Z = 1;  ∴     rH=0.529For He+ , n=2 and Z=2     ∴ rHe+ =0.529×42  For Li+2 , n =2 and z=3    ∴ rLi+2 =0.529×43 For Li+2 , n=3 and z=3      ∴ rLi+2 = 0.529×93 For  Be3+,  n=2   and  Z=4∴     rBe3+  =  0.529  ×  224=0.529 (which is same as r1 of  H-atom)