Related Questions
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4
The number of unpaired electrons in fluorine atoms is/are
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4
No two electrons in an atom can have the same values of all four quantum numbers according to
C. Pauli's exclusion principle
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4
The maximum number of electrons in a sub-energy level is equal to
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4
In an atom of hydrogen, which of the following orbitais has the lowest energy for an electron present in it?
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4
Mass of positron is the same to that of
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4
Which of the following atoms has a non-spherical outermost orbital.
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4
The atomic structure of an atom of an element is Is . The element 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
The fundamental particle that has least mass is
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4
The relationship between energy of a radiation and its frequency was given by
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Electronic configuration of is
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The correct set of quantum numbers for the impaired electron of fluorine atom is
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The number of neutrons present in are
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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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Charge on fundamental particle neutrino is
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The number of unpaired electrons in a chromic ion (atomic number 24) is
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Frequency of the wave having wave number is
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The number of unpaired electrons in the ground state of chromium is
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The atomic number of an element having the valence shell electronic configuration is
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For a given energy level the number of orbitals is equal to
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Charge on an electron was shown by
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4
When the electron is excited from K level to M level we get
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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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4
Isotopes have different
A. arrangement of electrons
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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 number of neutrons in the deuterium atom is
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4
Wave number is defined as
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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
In the case of atomic spectrum of hydrogen which series of lines lie in the visible region?
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Isotones have same