Atoms And Nuclei Question 80

Question: Minimum excitation potential of Bohr’s first orbit in hydrogen atom is [BHU 1998; JIPMER 2001, 02; Pb. PMT 2004]

Options:

A) 13.6 V

B) 3.4 V

C) 10.2 V

D) 3.6 V

Show Answer

Answer:

Correct Answer: C

Solution:

Excitation potential $ =\frac{\text{Excitation energy}}{e} $

Minimum excitation energy corresponds to excitation from $ n=1 $ to $ n=2 $ \ Minimum excitation energy in hydrogen atom $ =-3.4-(-13.6)=+10.2,eV $

so minimum excitation potential = 10.2 eV.



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