5 Questions
Who discovered the electron and suggested the 'plum pudding' model of the atom?
J.J. Thomson
In Rutherford's model of the atom, how are electrons described to orbit the atomic nucleus?
In energy levels
What is the charge of a proton?
Positive
According to Bohr's modification of Rutherford's model, what did he introduce the idea of?
Energy levels
What is the mass of an electron?
9.1 x10-28 g
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.
Test your knowledge of the historical development of our understanding of atoms with this Stoichiometry Chapter 1 1.1 Structure of Atoms quiz. Explore the contributions of scientists like John Dalton, J.J. Thomson, and Ernest Rutherford to the atomic theory.
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