Question
Question: In Bohr series of lines of hydrogen spectrum, the third line from the red end corresponds to which o...
In Bohr series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of the following inner-orbit jumps of the electron for Bohr orbits in an atom of hydrogen ?
A
3 2
B
5 2
C
4 1
D
2 5
Answer
5 2
Explanation
Solution
The electron has minimum energy in the first orbit and its energy increases as n increases. Here n represents number of orbit, i.e., 1at, 2nd, 3rd ..........The thired line from the red end corresponds. To yellow region i.e., 5. In order to obtain less energy electron tends to come 1st or 2nd orbit. So jump may be involved either 5 → 1 or 5 → 2. Thus option (1) is correct here.