Question

The radius of hydrogen shell is 0.53Å, then in first excited state radius of shell will be :

Answer 1

State of hydrogen atom (n) = 1(due to ground state). Radius of hydrogen atom (r) = 0.53 Å. Atomic number of Li (Z) = 3. Radius of Li2+ ion = r x n²/Z = 0.53 x 1²/3 = 0.17