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Question

Match the following:
List - IList - II(A) n=6n=3(In H- atoms)(p)10 lines in the spectrum(B) n=7n=3(In H atoms)(q) Spectral lines in visible region(C) n=5n=2(In H-atoms)(r) 6 lines in the spectrum(D) n=5n=1(In H-atoms) (s) Spectral lines in infrared region (t) Spectral lines in U.V. region

A
(Ar,s) (Bp,s); (Cq,r,s); (Dp,q,s,t)
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B
(Ar) (Bp,s); (Cq,r,s); (Dp,q,s,t)
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C
(Ar,s) (Bp,s); (Cq,r); (Dp,q,s,t)
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D
(Ar,s) (Bp,s); (Cq,r,s); (Dp,q,s)
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Solution

The correct option is A (Ar,s) (Bp,s); (Cq,r,s); (Dp,q,s,t)
(A) 63 n=3
no. of lines =3(3+1)2=6
All lines are in infrared region

(B) 73 n=4
no. of lines=4(4+1)2=10
All lines are in infrared region

(C) 52 n=3
no. of lines =3(3+1)2=6
Lines are in visible region and also in infrared region

(D) 51 n=4
no. of lines=5×42=10
Lines are in visible region, in Infrared region and also in U.V. region.

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