Question

The radius of hydrogen atom in the ground state is 0.53Å. The
radius of Li²⁺ ion (atomic number = 3) in a similar state is
(a) 0.17 Å (b) 1.06 Å
(c) 0.53 Å (d) 0.265 Å

Answer 1

Correct Answer:

0.17 Å

Explanation:

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

Answer 2

Option.A is the correct answer... Thank u

The radius of hydrogen