Atoms And Nuclei Question 90

Question: What will be the angular momentum of a electron, if energy of this electron in H-atom is 1.5eV (in J-sec) [RPMT 2000]

Options:

A) 1.05×1034

B) 2.1×1034

C) 3.15×1034

D) 2.1×1034

Show Answer

Answer:

Correct Answer: C

Solution:

Energy of electron in H atom En=13.6n2eV
1.5=13.6n2n2=13.61.5=3
Now angular momentum p=nh2π=3×6.6×10342×3.14=3.15×1034J×sec



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