Question

each arrow shows an electron moving from one energy level to another which transitions will release energy? electron transitions in h - atom

Explanation:

Step1: Recall energy release condition

When an electron transitions from a higher - energy level to a lower - energy level, energy is released.

Step2: Analyze each transition

• For transition A: The electron is moving to a lower energy level (from a higher level to level 1), so energy is released.
• For transition B: The electron is moving to a higher energy level (from level 2 to level 5), so energy is absorbed.
• For transition C: The electron is moving to a higher energy level (from level 3 to level 5), so energy is absorbed.
• For transition D: The electron is moving to a lower energy level (from a higher level to level 2), so energy is released.

Answer:

A. A and D