Number of spectral lines that are emitted by atomic hydrogen excited to the nth energy level is:
A
12n(n−1)
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B
14n(n−1)
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C
12n(n+1)
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D
12n(n−2)
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Solution
The correct option is A12n(n−1) Number of spectral lines that are emitted by atomic hydrogen excited to the nth energy level is (n2−n1)(n2−n1+1)2=12n(n−1) Here n2=n and n1=1