객관식
Which statement is true about the electrons in the Bohr model of an atom?
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9. Quantum Mechanics
Bohr Model
객관식
Which of the following best describes how Bohr's model of the atom differs from Thomson's model?
A
Bohr's model proposes that electrons are randomly distributed throughout the atom, similar to Thomson's model.
B
Bohr's model does not include a nucleus, while Thomson's model does.
C
Bohr's model places electrons in fixed energy levels around the nucleus, while Thomson's model describes electrons embedded in a positively charged 'plum pudding.'
D
Bohr's model suggests that atoms are indivisible, whereas Thomson's model allows for atomic division.
검증된 단계별 안내1
Step 1: Understand Thomson's model of the atom, often called the 'plum pudding' model, which describes the atom as a positively charged sphere with electrons embedded randomly within it, without a nucleus.
Step 2: Recognize that Bohr's model introduced the concept of a nucleus at the center of the atom, with electrons orbiting the nucleus in fixed, quantized energy levels or shells.
Step 3: Compare the two models by focusing on the arrangement and behavior of electrons: Thomson's model has electrons scattered randomly inside a positive sphere, while Bohr's model places electrons in specific orbits with defined energies.
Step 4: Note that Bohr's model explains atomic emission spectra by quantized electron transitions between energy levels, a feature absent in Thomson's model.
Step 5: Conclude that the key difference is Bohr's introduction of fixed electron energy levels around a nucleus, contrasting with Thomson's model of electrons embedded in a diffuse positive charge.
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