In which of the following transitions is the largest quantum of energy liberated by an hydrogen atom when the electron changes energy levels? [n is the quantum number]
- n = 2 to n = 1
-
n = 1 to n = 2
- n = 2 to n = 3
- n = 3 to n = 2
The correct answer is: B
Explanation
The largest quantum of energy a hydrogen atom liberates occurs during a transition from a higher to a lower energy level. The energy difference between levels can be calculated using the formula:
E = −13.6eV(\(\frac{1}{n_f^2} - \frac{1}{n_i^2}\))
n\(_i\) is the initial quantum number (higher energy level),
n\(_f\) is the final quantum number (lower energy level.
B. n = 1 to n = 2