Question

Which of the following electronic transitions for brackett series in a hydrogen atom will require the largest amount of energy?

• A. n = 5 to n = 4
• B. n = $\infty$ to n = 1
• C. n = $\infty$ to n = 4
• D. n = 4 to n = 1

Answer 1

The correct option is C n = $\infty$ to n = 4

As the energy level increases, the energy gap decreases progressively. So, the maximum energy for an electronic transition in brackett series is required when the electron jumps from n = $\infty$ to n = 4.