Question

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. $3 \rightarrow 2$
• B. $5 \rightarrow 2$
• C. $4 \rightarrow 1$
• D. $2 \rightarrow 5$

Answer 1

Answer: (B)

$5 \rightarrow 2$

Answer 2

Hydrogen spectrum coloured radiation means visible radiation corresponds to Balmer series $\left(n_{1}=2, n_{2}=3,4 \ldots \ldots\right)$ 3rd line from the red end it means $5 \to 2$