Charge on an electron was shown by

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Charge on an electron was shown by

A. J. J. Thomson

B. Kirchoff

C. Ohm

D. M.Planck

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The number of unpaired electrons in a chromic ion $C r^{+ 3}$ (atomic number 24) is

A. 6

B. 4

C. 3

D. 1

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The ion that is isoelectronic with CO is

A. $C N^{-}$

B. ${O_{2}}^{+}$

C. ${O_{2}}^{-}$

D. ${N_{2}}^{+}$

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The possible values of l for an s orbital are

A. -1, +1

B. 0 to 2

C. -2 and + 1

D. 0

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The wavelength of an electron moving with a velocity $5 \times 10^{5} m s e c^{- 1} i s (h = 6.63 \times 10^{- 34} k g m^{2} s e c^{- 1})$

A. $11.6 \times 10^{- 5} m$

B. $11.6 \times 10^{- 9} m^{- 1}$

C. $14.6 \times 10^{- 5} m$

D. $1.46 \times 10^{- 9} m$

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The exchange of particles considered responsible for keeping the nucleons together are

A. meson

B. electron

C. positron

D. neutron

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The atomic number of an element having the valence shell electronic configuration $4 s^{2} 4 p^{6}$ is

A. 35

B. 26

C. 23

D. 34

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The atomic structure of an atom of an element is Is $1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{6}$ . The element is

A. Cl-35

B. S-32

C. N-18

D. O-16

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The charge on an atom of ${}_{13}^{27}A l$ is

A. +40

B. +27

C. +14

D. Zero

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The fundamental particle that has least mass is

A. meson

B. alpha-particle

C. electron

D. neutron

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Cathode rays contain a stream of

A. $n$

B. $r$

C. ${}_{+ 1}e^{0}$

D. ${}_{- 1}e^{0}$

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When the electron is excited from K level to M level we get

A. $γ$ - rays

B. cathode rays

C. continuous spectra

D. absorption spectra

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The interrelationship between matter and energy was given by

A. Rutherford

B. Joule

C. de Broglie

D. Einstein

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Davisson and Germer gave an experimental evidence for

A. wave nature of electron

B. particle nature of electron

C. particle nature of light

D. wave nature of light

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If value of h is taken as $10^{- 34} k g m^{2} s e c^{- 1}$ , the de-Broglie wavelength of a particle of mass $10^{- 31}$ having velocity $10^{9} c m s e c^{- 1}$ is

A. 0.01 m

B. 2 nm

C. 0.1 nm

D. $15 Å$

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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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Electronic configuration of $C u^{+}$ is

A. $[A r] 3 d^{9}$

B. $[A r] 3 d^{10}$

C. $[A r] 3 d^{9} 3 s^{2}$

D. $[A r] 3 d^{7} 4 s^{1} 4 p^{1}$

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Charge on an electron was shown by

A. J. J. Thomson

B. Kirchoff

C. Ohm

D. M.Planck

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Charge on fundamental particle neutrino is

A. 0

B. +1

C. -1

D. None of these

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The correct set of quantum numbers for the impaired electron of fluorine atom is

A.

n	l	m
2	1	0

B.

n	l	m
2	1	1

C.

n	l	m
3	1	1

D.

n	l	m
3	0	0

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In the case of atomic spectrum of hydrogen which series of lines lie in the visible region?

A. Balmer

B. Paschen

C. Pfund

D. None of these

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In an atom of hydrogen, which of the following orbitais has the lowest energy for an electron present in it?

A. 3r

B. 2p

C. 4p

D. 2s

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For a given energy level the number of orbitals is equal to

A. $n^{2}$

B. $2 l + 1$

C. $4 (2 l + 3)$

D. $\sqrt{2 n^{3}}$

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Which elements is represented by the following electronic configuration?

A. Nitrogen

B. Oxygen

C. Fluorine

D. Neon

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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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The number of unpaired electrons in the ground state of chromium is

A. 1

B. 6

C. 7

D. 2

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Which of the following atoms has a non-spherical outermost orbital.

A. H

B. Li

C. Be

D. B

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Isotones have same

A. mass number

B. nuclear mass

C. no. of neutrons

D. no. of electrons

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Frequency of the wave having wave number $20000 c m^{- 1}$ is

A. $6 \times 10^{12} s e c^{- 1}$

B. $6 \times 10^{14} s e c^{- 1}$

C. $3 \times 10^{14} M H z$

D. $4 \times 10^{6} H z$

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Which of the following weighs the least?

A. 1 g of $C O_{2}$

B. 2 litres of $C O_{2}$ at N.T.P.

C. $3.01 \times 10^{11}$ molecules of $C O_{2}$

D. $3.01 \times 10^{22}$ atoms of carbon

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The orbitals with maximum number of possible orientation is:

A. s

B. d

C. f

D. p

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Accepted Answer

A. J. J. Thomson

Charge on an electron was shown by

Correct Answer :

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Related Questions

The number of unpaired electrons in a chromic ion $C r^{+ 3}$ (atomic number 24) is

The ion that is isoelectronic with CO is

The possible values of l for an s orbital are

The wavelength of an electron moving with a velocity $5 \times 10^{5} m s e c^{- 1} i s (h = 6.63 \times 10^{- 34} k g m^{2} s e c^{- 1})$

The exchange of particles considered responsible for keeping the nucleons together are

The atomic number of an element having the valence shell electronic configuration $4 s^{2} 4 p^{6}$ is

The atomic structure of an atom of an element is Is $1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{6}$ . The element is

The charge on an atom of ${}_{13}^{27}A l$ is

The fundamental particle that has least mass is

Cathode rays contain a stream of

When the electron is excited from K level to M level we get

The interrelationship between matter and energy was given by

Davisson and Germer gave an experimental evidence for

If value of h is taken as $10^{- 34} k g m^{2} s e c^{- 1}$ , the de-Broglie wavelength of a particle of mass $10^{- 31}$ having velocity $10^{9} c m s e c^{- 1}$ is

The velocity of a photon is

Electronic configuration of $C u^{+}$ is

Charge on an electron was shown by

Charge on fundamental particle neutrino is

The correct set of quantum numbers for the impaired electron of fluorine atom is

In the case of atomic spectrum of hydrogen which series of lines lie in the visible region?

In an atom of hydrogen, which of the following orbitais has the lowest energy for an electron present in it?

For a given energy level the number of orbitals is equal to

Which elements is represented by the following electronic configuration?

The wavelength of an electron

The number of unpaired electrons in the ground state of chromium is

Which of the following atoms has a non-spherical outermost orbital.

Isotones have same

Frequency of the wave having wave number $20000 c m^{- 1}$ is

Which of the following weighs the least?

The orbitals with maximum number of possible orientation is:

Also checkout

Charge on an electron was shown by

Correct Answer :

Show all Atomic Structure MCQ

Related Questions

The number of unpaired electrons in a chromic ion Cr+3 (atomic number 24) is

The ion that is isoelectronic with CO is

The possible values of l for an s orbital are

The wavelength of an electron moving with a velocity 5×105m sec-1 is (h=6.63 ×10-34 kg m2 sec-1)

The exchange of particles considered responsible for keeping the nucleons together are

The atomic number of an element having the valence shell electronic configuration 4s24p6 is

The atomic structure of an atom of an element is Is 1s2, 2s22p6, 3s23p6. The element is

The charge on an atom of A1327l is

The fundamental particle that has least mass is

Cathode rays contain a stream of

When the electron is excited from K level to M level we get

The interrelationship between matter and energy was given by

Davisson and Germer gave an experimental evidence for

If value of h is taken as 10-34 kg m2 sec-1, the de-Broglie wavelength of a particle of mass 10-31 having velocity 109cm sec-1 is

The velocity of a photon is

Electronic configuration of Cu+ is

Charge on an electron was shown by

Charge on fundamental particle neutrino is

The correct set of quantum numbers for the impaired electron of fluorine atom is

In the case of atomic spectrum of hydrogen which series of lines lie in the visible region?

In an atom of hydrogen, which of the following orbitais has the lowest energy for an electron present in it?

For a given energy level the number of orbitals is equal to

Which elements is represented by the following electronic configuration?

The wavelength of an electron

The number of unpaired electrons in the ground state of chromium is

Which of the following atoms has a non-spherical outermost orbital.

Isotones have same

Frequency of the wave having wave number 20000 cm-1 is

Which of the following weighs the least?

The orbitals with maximum number of possible orientation is:

Also checkout

The number of unpaired electrons in a chromic ion $C r^{+ 3}$ (atomic number 24) is

The wavelength of an electron moving with a velocity $5 \times 10^{5} m s e c^{- 1} i s (h = 6.63 \times 10^{- 34} k g m^{2} s e c^{- 1})$

The atomic number of an element having the valence shell electronic configuration $4 s^{2} 4 p^{6}$ is

The atomic structure of an atom of an element is Is $1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{6}$ . The element is

The charge on an atom of ${}_{13}^{27}A l$ is

If value of h is taken as $10^{- 34} k g m^{2} s e c^{- 1}$ , the de-Broglie wavelength of a particle of mass $10^{- 31}$ having velocity $10^{9} c m s e c^{- 1}$ is

Electronic configuration of $C u^{+}$ is

Frequency of the wave having wave number $20000 c m^{- 1}$ is