Atoms And Nuclei Question 141

Question: If the energy of a hydrogen atom in nth orbit is En , then energy in the nth orbit of a singley ionized helium atom will be [BHU 2004]

Options:

A) 4En

B) En/4

C) 2En

D) En/2

Show Answer

Answer:

Correct Answer: A

Solution:

EnZ2

Þ (En)He(En)H=ZHe2ZH2=4

Þ (En)He=4×(En)H



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