A) 3
B) 6
C) 5
D) 2
Correct Answer: B
Solution :
The number of spectral lines observed from quantum number n is \[\frac{n(n-1)}{2}.\] When n = 4, number of lines is \[\frac{4(4-1)}{2}=6\] Hence, the correction option is [b].You need to login to perform this action.
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