As per Bohr model, the minimum energy (i

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Target Exam

CUET

Subject

Physics

Chapter

Atoms

Question:

As per Bohr model, the minimum energy (in eV) required to remove an electron from the ground state of doubly ionized Li atom (Z = 3) is

Options:

1.51

13.6

40.8

122.4

Correct Answer:

122.4

Explanation:

$E=-Z^2 \times 13.6 eV=-9 \times 13.6 eV=-122.4 eV$

So ionisation energy = + 122.4 eV.