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Question: Answered & Verified by Expert
The ionization energy of $\mathrm{Li}^{2+}$ is equal to
PhysicsNuclear PhysicsJIPMERJIPMER 2011
Options:
  • A 9hcR
  • B 6hcR
  • C $2 h c R$
  • D $h c R$
Solution:
1366 Upvotes Verified Answer
The correct answer is: 9hcR
Ionization energy $=\operatorname{Rch} Z^2$
$Z=3$ for $\mathrm{Li}^{2+}$
$\therefore$ Ionization energy $=(3)^2 R c h$
$=9 R c h$

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