Structure Of Atom

Chemistry
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The atomic weight of an atom is because of

A
electrons and protons
B
electrons and neutrons
C
neutrons and protons
D
electrons, neutrons and protons
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According to Aufbau principle, the electron has a tendency to occupy that sub-shell which has:

A
lowest energy
B
highest energy
C
average energy
D
no energy
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Which of the following quantities can only be a whole number?

A
Atomic radius
B
Atomic number
C
Mass number
D
Equivalent weight
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For an atom of a given element, the number of electrons equals to:

A
the number of protons number of neutrons
B
the atomic number of the element
C
the number of proton number of neutrons
D
the mass number of the element
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According to Bohr hypothesis, discrete quantity is

A
Momentum
B
Angular velocity
C
Potential energy
D
Angular momentum
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Bohr Magneton value in S.I. Units is:

A
B
C
D
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Bohrs atomic model assumes :

A
the nucleus is of infinite mass and is at rest
B
electron in a quantized orbit will not radiate energy
C
mass of the electron remains constant
D
all of the above
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The first model of an atom was given by _____________.

A
N. Bohr
B
E. Goldstein
C
Rutherford
D
J.J. Thomson
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The electrons are filled in various sub levels according to the order of their energies, is known as:

A
Aufbau principle
B
Pauli's principle
C
Hund's rule
D
principle
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