Question

each arrow shows an electron moving from one energy level to another. which transitions will release energy? electron transitions in h - atom 1 2 3 4 5 only a b and c a and d

Explanation:

Step1: Recall energy - level principle

Electrons release energy when moving from a higher - energy level to a lower - energy level.

Step2: Analyze each transition

Transition A moves from a higher level to a lower level. Transition B moves from a lower level to a higher level (absorbs energy). Transition C moves from a higher level to a lower level. Transition D moves from a lower level to a higher level (absorbs energy).

Answer:

B and C