Question

a black arrow shows an electron moving from one energy level to another. which transition will release energy?
electron transitions in h - atom
a. a and d
b. b and c
c. only a
d. only c

Explanation:

Step1: Recall electron energy level rules

Electrons in lower energy levels have less energy. When an electron moves to a lower energy level, it emits energy. When it moves to a higher energy level, it absorbs energy.

Step2: Analyze each transition

• Transition A: Electron moves to a lower energy level (emits energy).
• Transition B: Electron moves to a higher energy level (absorbs energy).
• Transition C: Electron moves to a lower energy level (emits energy).
• Transition D: Electron moves to a higher energy level (absorbs energy).

Answer:

D. only C