Question

The figure indicates the energy level diagram of an atoms and the origin of six spectrum lines in emission (e.g line no.$5$ arises from the transition from level $B$ to $A$) Which of the following spectral lines will occur in the absorption spectrum?

• A. $4,5,6$
• B. $1,2,3,4,5,6$
• C. $\mathrm{1.2.3}$
• D. $1,4,6$

Answer 1

The correct option is C $\mathrm{1.2.3}$

The absorption lines are obtained when the electron jumps from ground state $(n=1)$ to the higher energy states. Thus only $1,2$ and $3$ lines will be obtained.