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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

Navjyot Kalra , 12 Years ago
Grade 10
anser 1 Answers
Amit Saxena

(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.

Last Activity: 12 Years ago
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