Q80 · CSIR NET Chemistry, June 2014
Paper: CSIR NET June 2014 · Subject: Physical Chemistry · Chapter: Quantum Chemistry · Topic: Quantum Chemistry – General · Marks: 2 · Difficulty: Easy
If the ionization energy of H atom is x , the ionization energy of $\mathrm{Li}^{2+}$ is
(a)$2x$
(b)$3x$
(c)$9x$
(d)$27x$
Answer
Answer: C ✓ checked by 4AB · confidence high
The source book printed no answer; this one was worked out and checked — see the explanation.
Explanation
For the hydrogen-like Li²⁺ ion the ionisation energy scales as Z²: 9x.
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