Solveeit Logo
Login

Question

Question: In a sample of H-atom electrons make transition from 5th excited state upto ground state, producing ...

In a sample of H-atom electrons make transition from 5th excited state upto ground state, producing all possible types of photons, then number of lines in infrared region are

A

4

B

5

C

6

D

3

Answer

6

Explanation

Solution

infrared lines =total lines – visible lines – UV lines =6(6−1)2−4−5=15−9=6= \frac{6(6 - 1)}{2} - 4 - 5 = 15 - 9 = 6.

(visible lines (=46→2,5→2,4→2,3→2)( = 46 \rightarrow 2,5 \rightarrow 2,4 \rightarrow 2,3 \rightarrow 2) (UV lines (=56→1,5→1,5→1,4→1,3→1,2→1)( = 56 \rightarrow 1,5 \rightarrow 1,5 \rightarrow 1,4 \rightarrow 1,3 \rightarrow 1,2 \rightarrow 1)