Related Questions
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4
A dipositive ion has in the K shell, 8 e~ s in the L shell and in the M shell. Atomic number of Z is
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4
Bohr's concept of the orbit in an atom was contradicted by
A. de Broglie relationship
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4
In the nucleus of there are
A. 40 protons and 20 electrons
B. 20 protons and 40 electrons
C. 20 protons and 40 neutrons
D. 20 protons and 20 neutrons
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4
Which of the following has the highest mass?
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4
Which elements is represented by the following electronic configuration?
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4
The velocity of a photon is
A. dependent on its wavelength
B. dependent on its source
C. equal to cube of its amplitude
D. independent of its wavelength
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4
The maximum number of electrons in a sub-energy level is equal to
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4
The wavelength of an electron moving with a velocity
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Electronic configuration of is
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The number of unpaired electrons in a chromic ion (atomic number 24) is
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The size of nucleus is
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For a given energy level the number of orbitals is equal to
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Mass of positron is the same to that of
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Cathode rays contain a stream of
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Frequency of the wave having wave number is
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The atomic structure of an atom of an element is Is . The element is
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Isotones have same
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The fundamental particle that has least mass is
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The number of neutrons in the deuterium atom is
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The corect set of quantum numbers for the impaired electron of fluorine atom is
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The charge on an atom of is
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Argon is isoelectronic with
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4
The number of unpaired electrons in fluorine atoms is/are
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4
The wavelength of an electron
A. is equal to that of light
B. remains constant with velocity
C. decreases with an increasing velocity
D. increases with an decreasing velocity
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4
Which of the following weighs the least?
B. 2 litres of at N.T.P.
C. molecules of
D. atoms of carbon
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When the electron is excited from K level to M level we get
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4
The maximum number of electrons that can be accommodated by an atom in g-sub-energy level are
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The ion that is isoelectronic with CO is
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The exchange of particles considered responsible for keeping the nucleons together are
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Among the following ions, which are has the highest paramagnetism?