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Questions and Answers
Who discovered the electron and suggested the 'plum pudding' model of the atom?
Who discovered the electron and suggested the 'plum pudding' model of the atom?
- Bohr
- J.J. Thomson (correct)
- John Dalton
- Rutherford
In Rutherford's model of the atom, how are electrons described to orbit the atomic nucleus?
In Rutherford's model of the atom, how are electrons described to orbit the atomic nucleus?
- In random paths
- In elliptical orbits
- In energy levels (correct)
- In fixed circular paths
What is the charge of a proton?
What is the charge of a proton?
- Variable
- Negative
- Positive (correct)
- Neutral
According to Bohr's modification of Rutherford's model, what did he introduce the idea of?
According to Bohr's modification of Rutherford's model, what did he introduce the idea of?
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What is the mass of an electron?
What is the mass of an electron?
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Study Notes
Atomic Structure
- J.J. Thomson discovered the electron and suggested the 'plum pudding' model of the atom.
Rutherford's Model
- In Rutherford's model, electrons are described to orbit the atomic nucleus in energy levels or shells, not in a fixed position.
Protons
- The charge of a proton is +1 elementary charge.
Bohr's Modification
- Bohr introduced the idea of energy quantization, where electrons occupy specific energy levels around the nucleus.
Electrons
- The mass of an electron is approximately 9.10938215 × 10^(-31) kg.
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