An x ray can be emitted when an electron undergoes an energy level transition.
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[Ques. 2] The highest energy level in an atom corresponds to n = 1.
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[Ques. 3] The ground state is the lowest energy level in an atom.
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[Ques. 4] The element helium was discovered by studying the sun's spectrum.
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[Ques. 5] The early Solvay Conferences had a great effect upon the development of quantum mechanics.
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[Ques. 6] Electrons in atoms move about the nucleus in well defined circular orbits.
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[Ques. 7] The uncertainty principle states that a particle cannot be precisely localized.
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[Ques. 8] In the Bohr model of the hydrogen atom both the energy and orbital angular momentum of the electron are quantized.
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[Ques. 9] In an energy level transition from the n = 2 state to the n =1 state for a hydrogen atom a photon will be emitted.
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[Ques. 10] An atom can be excited into a higher energy state by absorbing a photon.
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