Question

Which of the following transitions in hydrogen atoms emit photons of the highest frequency?

• A. n=1 to n=2
• B. n=2 to n=1
• C. n=2 to n=6
• D. n=6 to n=2

Answer 1

The correct option is B

n=2 to n=1

Explanation of the correct option:

(B) n=$2$ to n=$1$

• The highest frequency emission will be of maximum energy difference.
• The greater the energy difference gets by closer the n.
• The greater the energy difference results in an emitted photons of greater energy and therefore higher frequency and shorter wavelength.

Explanation of incorrect options:

(A) n=$1$ to n=$2$

• When an electron jumps from n=$1$ to n=$2$, it absorbs a photon of ultraviolet light.

(C) n=$2$ to n=$6$

• When an electron jumps from n=$2$ to n=$6$, it absorbs a photon of ultraviolet light.

(D) n=$6$ to n=$2$

• When an electron jumps from n=$6$ to n=$2$, it emits photons of ultraviolet light.
• In this emission, frequency is not higher than the frequency emission during n=$2$ to n=$1$.
• Because the distance between n=$6$ to n=$2$ is more.

Hence, option (B) is correct., n=$2$ to n=$1$ transitions in hydrogen atoms emit photons of the highest frequency.