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Grade 10Modern Physics

When hydrogen atom is in its first excited level, its radius is

(a) Four times its ground state radius

(b) Twice

(c) Same

(d) Half

Profile image of Navjyot Kalra
12 Years agoGrade 10
Answers icon

1 Answer

Profile image of Amit Saxena
12 Years ago

(a)

         

Radius in ground state =   

Radius in first excited state =  

(\ n = 2)

Hence, radius of first excited state is foul'' times the radius in ground state.

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