Question

The number of spectral lines produced when an electron jumps from 5th orbit to 2nd orbit in the hydrogen atom is.

Answer 1

Answer:

The equation (n2 - n1)(n2 - n1 - 1)/2 gives the number of spectral lines for a particular jump; where n2 is the initial orbit and n1 is the orbit reached after jump. So, in this case, it'll be 6

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Explanation:

Answer 2

Maximum 3 spectral lines are produced due to the following energy level changes possible for a single atom -

1. 5 to 2 directly

2. 5 to 3

3. 5 to 4