SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Bohr model
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Quantum mechanical model
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Not true of either model
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Both Bohr and Quantum mechanical model
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Detailed explanation-1: -This model, which is the basis of the modern understanding of the atom, is known as the quantum mechanical or wave mechanical model. The fact that there are only certain allowable states or energies that an electron in an atom can have is similar to a standing wave.
Detailed explanation-2: -The correct theory of the atom is called quantum mechanics; the Bohr Model is an approximation to quantum mechanics that has the virtue of being much simpler. (Here is a more realistic discussion of what atomic orbitals look like in quantum mechanics.)
Detailed explanation-3: -The theory notes that electrons in atoms travel around a central nucleus in circular orbits and can only orbit stably at a distinct set of distances from the nucleus in certain fixed circular orbits. Such orbits are related to certain energies and are also referred to as energy shells or energy levels.