Question

which of the following statements correctly describes energy levels? select all that apply. a energy levels are the only place where electrons are found. b energy levels are located at fixed distances from the nucleus. c energy levels farther from the nucleus have more energy. d energy levels are unpredictable and change randomly.

Explanation:

• A is incorrect as electrons can also be in regions between energy - levels during transitions.
• B is correct as energy levels are quantized and at fixed distances from the nucleus in the Bohr model and related atomic models.
• C is correct because electrons in outer energy levels have more potential energy due to their greater distance from the positively - charged nucleus.
• D is incorrect as energy levels are well - defined and follow quantum mechanical rules, not changing randomly.

Answer:

B. Energy levels are located at fixed distances from the nucleus.
C. Energy levels farther from the nucleus have more energy.