10
lesson pretestMultiple Choice

Pretest

Question 10 • Chemistry

Which statement about the electron-cloud model is true?

Answer
A
It can easily be replaced by existing models.
B
It is the currently accepted atomic model.
C
It does not explain the formation of emission lines.
D
It specifies the location and momentum of an electron.

Explanation

The electron-cloud model is the currently accepted model of the atom. It describes where an electron is likely to be found, rather than giving its exact location and momentum. It also accounts for emission lines, so choices C and D are not true.

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