Question

For hydrogen atom transition from n = 2 to n = 3 represent which of the following line ?
(A) Absorption line of Paschen series. (B) Emission line of Paschen series.
(C) Emission line of Balmer series. (D) Absorption line of Balmer series

Answer 1

Answer:

For hydrogen atom transition from n=2 to n=3 represents the absorption line of Balmer series.

Therefore, the option (D) is correct.

Explanation:

The given transition is a absorption because the transition is happening from lower energy level to higher energy level.

According to Bohr's model : The transitions from energy level n=2 to higher levels are represented as Balmer series.

      $\frac{1}{\lambda} =R[\frac{1}{n_{1}^{2}} -\frac{1}{n_{2}^{2}} ]$

For Balmer series: $n_{1}=2$  and $n_{2}=3,4,5,6.....$

∴  $\frac{1}{\lambda} =R[\frac{1}{(2)^{2}} -\frac{1}{n_{2}^{2}} ]$

Given $n_{1}=2$  and $n_{2}=3$

∴   $\frac{1}{\lambda} =R[\frac{1}{(2)^{2}} -\frac{1}{(3)^{2}} ]$

Therefore the given transition represent the absorption line of Balmer series.

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