Mass of positron is the same to that of

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Mass of positron is the same to that of

A. proton

B. meson

C. electron

D. neutron

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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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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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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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Isotopes have different

A. arrangement of electrons

B. no. of P and e'

C. no. of neutrons

D. no. of electrons

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The maximum number of electrons that can be accommodated by an atom in g-sub-energy level are

A. 20

B. 25

C. 18

D. 12

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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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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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Among the following ions, which are has the highest paramagnetism?

A. $[C r (H_{2} O)_{6}]^{+ 3}$

B. $[F e (H_{2} O)_{6}]^{+ 2}$

C. $[C u (H_{2} O)_{6}]^{+ 2}$

D. $[Z n (H_{2} O)_{6}]^{+ 2}$

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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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Argon is isoelectronic with

A. $M g^{+ +}$

B. $C l^{-}$

C. $B r^{-}$

D. $H^{+}$

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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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Which elements is represented by the following electronic configuration?

A. Nitrogen

B. Oxygen

C. Fluorine

D. Neon

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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 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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Mass of positron is the same to that of

A. proton

B. meson

C. electron

D. neutron

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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 orbitals with maximum number of possible orientation is:

A. s

B. d

C. f

D. p

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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 angular momentum of the moving electron is equal to

A. $\sqrt{n h}$

B. $\frac{h^{2}}{2 π}$

C. $\frac{n h}{π}$

D. $\frac{n h}{2 π}$

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The number of neutrons in the deuterium atom is

A. 16

B. 3

C. 1

D. 0

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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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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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In Lyman series an electron jumps from higher energy level to

A. K energy level

B. M energy level

C. N energy level

D. L energy level

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In the nucleus of ${}_{20}C a^{40}$ 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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The size of nucleus is

A. $10^{- 12} m$

B. $10^{- 8} m$

C. $10^{- 15} m$

D. $10^{- 10} m$

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$β$ rays are a stream of

A. He

B. electrons

C. positron

D. neutrons

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The maximum number of electrons in a sub-energy level is equal to

A. $4 (2 l + 1)$

B. $2 (2 l + 1)$

C. $2 n^{2}$

D. $n^{3}$

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Accepted Answer

C. electron

Mass of positron is the same to that of

Correct Answer :

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

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

Davisson and Germer gave an experimental evidence for

Isotopes have different

The maximum number of electrons that can be accommodated by an atom in g-sub-energy level are

The fundamental particle that has least mass is

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Argon is isoelectronic with

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Which elements is represented by the following electronic configuration?

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

Mass of positron is the same to that of

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

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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

The angular momentum of the moving electron is equal to

The number of neutrons in the deuterium atom is

Cathode rays contain a stream of

Isotones have same

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

In Lyman series an electron jumps from higher energy level to

In the nucleus of ${}_{20}C a^{40}$ there are

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The maximum number of electrons in a sub-energy level is equal to

Also checkout

Mass of positron is the same to that of

Correct Answer :

Show all Atomic Structure MCQ

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

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

Davisson and Germer gave an experimental evidence for

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The maximum number of electrons that can be accommodated by an atom in g-sub-energy level are

The fundamental particle that has least mass is

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Among the following ions, which are has the highest paramagnetism?

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

Which elements is represented by the following electronic configuration?

Which of the following weighs the least?

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Mass of positron is the same to that of

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

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

In Lyman series an electron jumps from higher energy level to

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The maximum number of electrons in a sub-energy level is equal to

Also checkout

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

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

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

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

In the nucleus of ${}_{20}C a^{40}$ there are

$β$ rays are a stream of