Structure of Atom
Nagaland Board · Class 11 · Chemistry
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Quick Quiz: Structure of Atom
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Who proposed the first scientific atomic theory in 1808?
Which subatomic particle was first discovered using cathode ray tubes?
What was the primary limitation of Dalton's atomic theory?
Who conducted the famous alpha-particle scattering experiment?
Sample Questions
What is the charge of an electron?
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-1.602 × 10⁻¹⁹ C
The electron carries a negative charge of -1.602 × 10⁻¹⁹ coulombs, as determined by R.A. Millikan's oil drop experiment.
In Bohr's atomic model, what determines the energy of an electron?
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Principal quantum number
In Bohr's model of the hydrogen atom, the energy of an electron is determined solely by its principal quantum number (n).
What is the maximum number of electrons in the first shell (K shell)?
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2
The first shell (K shell) can accommodate a maximum of 2 electrons, following the formula 2n², where n is the principal quantum number.
Who proposed the uncertainty principle?
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Werner Heisenberg
Werner Heisenberg proposed the uncertainty principle in 1927, stating that it is impossible to simultaneously determine the exact position and momentum of an electron.
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