Question

question 25 of 30 which of the following shows the wavelengths of light that an atom gives off when an electron falls to a lower energy level? a. absorption spectrum b. emission spectrum c. electromagnetic spectrum d. quantum spectrum

Explanation:

• Option A: Absorption spectrum shows wavelengths absorbed (electrons move to higher levels), not emitted. Eliminate A.
• Option B: Emission spectrum is produced when electrons fall to lower energy levels, releasing light (photons) with specific wavelengths. This matches the question's description.
• Option C: Electromagnetic spectrum is the entire range of electromagnetic radiation (all wavelengths), not specific to atomic electron transitions. Eliminate C.
• Option D: "Quantum spectrum" is not a standard term for this concept. Eliminate D.

Answer:

B. Emission spectrum