Question

When the electron jumps from $$5^{th}$$ orbit to ground state, the number of spectral lines produced in the hydrogen spectrum is:

A
5
B
10
C
20
D
1

Solution

The correct option is B $$10$$Number of spectral lines from $$n_1$$ to $$n_2$$:= $$\displaystyle\dfrac{(n_2 - n_1 + 1)(n_2 -n _1)}{2}$$$$n_1 = 1$$$$n_2 = 5$$Number of spectral lines $$=\displaystyle\dfrac{5\times(5-1)}{2}$$                                          $$= 10$$Chemistry

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