Atomic Structure — Practice Quiz
Telangana Open School (TOSS) · Class 12 · Chemistry
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Quick Quiz: Atomic Structure
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Which of the following is a fundamental particle of an atom?
Who discovered the electron?
What is the relative charge of a proton?
Which particle has no charge?
Sample Questions
The mass of a proton is approximately how many times that of an electron?
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1840
The proton is approximately 1840 times heavier than the electron.
Which model is also known as the watermelon model?
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Thomson's model
Thomson's model is called the watermelon model because the positive charge is like the pulp and electrons like seeds.
In Thomson's model, where are the electrons located?
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Scattered in a positively charged sphere
Thomson proposed that electrons are embedded in a positively charged sphere like plums in a pudding.
What was the main aim of Rutherford's alpha-particle scattering experiment?
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To test Thomson's model
Rutherford performed the experiment to verify the structure of the atom as proposed by Thomson.
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