Multiple Choice
Which of the following atomic models is missing from a set that includes Dalton's solid sphere model, Thomson's plum pudding model, and Bohr's planetary model?
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2. Atoms & Elements
Atomic Theory
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Which scientist is known for developing the planetary model of the atom?
A
Niels Bohr
B
J.J. Thomson
C
John Dalton
D
Ernest Rutherford
Verified step by step guidance1
Understand that the question is about the historical development of atomic models in chemistry and physics.
Recall that John Dalton proposed the solid sphere model of the atom, which was an early concept without internal structure.
Remember that J.J. Thomson discovered the electron and proposed the plum pudding model, where electrons were embedded in a positively charged sphere.
Know that Ernest Rutherford conducted the gold foil experiment and proposed the nuclear model of the atom, where a dense nucleus is surrounded by electrons.
Recognize that Niels Bohr built upon Rutherford's model by introducing quantized electron orbits, leading to the planetary model of the atom.
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