Atomic Structure - Result Question 74

####50. Energy of the state S1 in units of the hydrogen atom ground state energy is

(2010)

(a) 0.75

(b) 1.50

(c) 2.25

(d) 4.50

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Answer:

Correct Answer: 50. (a)

Solution:

  1. Ground state energy of electron in H-atom (EH)

EH=kZ2n2=k(Z=1,n=1)

For S1 state of Li2+,

E=k(3)222=94k=2.25k



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