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Question 17N.1.SL.TZ0.23

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Date November 2017 Marks available [Maximum mark: 1] Reference code 17N.1.SL.TZ0.23
Level SL Paper 1 Time zone TZ0
Command term Question number 23 Adapted from N/A
23.
[Maximum mark: 1]
17N.1.SL.TZ0.23

Which statement about atomic spectra is not true?

A. They provide evidence for discrete energy levels in atoms.

B. Emission and absorption lines of equal frequency correspond to transitions between the same two energy levels.

C. Absorption lines arise when electrons gain energy.

D. Emission lines always correspond to the visible part of the electromagnetic spectrum.

[1]

Markscheme

D

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