3
QuizMultiple Choice

The Modern Atomic Theory

Question 3 • *26-27 CFISD TX-Chemistry A CR

Which statement about the electron-cloud model is true?

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

Explanation

The electron-cloud model is the modern, currently accepted model of the atom. It describes regions where an electron is likely to be found, rather than giving an exact location and momentum at the same time. It also explains emission lines through electrons changing between quantized energy levels, so choices C and D are not true.

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