Wave number is defined as

Question

Wave number is defined as

A. $\frac{3}{λ}$

B. $\frac{λ^{2}}{n π}$

C. $\frac{h}{2 π}$

D. $\frac{1}{λ}$

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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 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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Bohr's concept of the orbit in an atom was contradicted by

A. de Broglie relationship

B. Uncertainty principle

C. Planck's hypothesis

D. Hund's rule

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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 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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Which of the following has the highest mass?

A. Neutron

B. Alpha particle

C. Electron

D. Deuterium

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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 number of neutrons present in ${}_{19}^{39}K$ are

A. 28

B. 39

C. 20

D. 19

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

A. +40

B. +27

C. +14

D. Zero

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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 interrelationship between matter and energy was given by

A. Rutherford

B. Joule

C. de Broglie

D. Einstein

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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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No two electrons in an atom can have the same values of all four quantum numbers according to

A. Hund's rules

B. Flemming rule

C. Pauli's exclusion principle

D. Bohr theory

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The number of unpaired electrons in fluorine atoms is/are

A. 4

B. 2

C. 1

D. 0

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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 relationship between energy of a radiation and its frequency was given by

A. Planck

B. Rutherford

C. Einstein

D. Joule

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Charge on fundamental particle neutrino is

A. 0

B. +1

C. -1

D. None of these

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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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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 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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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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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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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 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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Cathode rays contain a stream of

A. $n$

B. $r$

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

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

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Accepted Answer

D.

\frac{1}{λ}

Wave number is defined as

Correct Answer :

Show all Atomic Structure MCQ

Related Questions

Which elements is represented by the following electronic configuration?

The possible values of l for an s orbital are

Bohr's concept of the orbit in an atom was contradicted by

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 wavelength of an electron

Which of the following has the highest mass?

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 number of neutrons present in ${}_{19}^{39}K$ are

Davisson and Germer gave an experimental evidence for

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

Which of the following weighs the least?

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

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 interrelationship between matter and energy was given by

Isotones have same

No two electrons in an atom can have the same values of all four quantum numbers according to

The number of unpaired electrons in fluorine atoms is/are

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

The relationship between energy of a radiation and its frequency was given by

Charge on fundamental particle neutrino is

Mass of positron is the same to that of

Isotopes have different

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

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

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

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

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

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

Cathode rays contain a stream of

Also checkout

Wave number is defined as

Correct Answer :

Show all Atomic Structure MCQ

Related Questions

Which elements is represented by the following electronic configuration?

The possible values of l for an s orbital are

Bohr's concept of the orbit in an atom was contradicted by

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

The wavelength of an electron

Which of the following has the highest mass?

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 number of neutrons present in K1939 are

Davisson and Germer gave an experimental evidence for

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

Which of the following weighs the least?

The charge on an atom of A1327l is

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

The ion that is isoelectronic with CO is

The interrelationship between matter and energy was given by

Isotones have same

No two electrons in an atom can have the same values of all four quantum numbers according to

The number of unpaired electrons in fluorine atoms is/are

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

The relationship between energy of a radiation and its frequency was given by

Charge on fundamental particle neutrino is

Mass of positron is the same to that of

Isotopes have different

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

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

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

Electronic configuration of Cu+ is

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

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

Cathode rays contain a stream of

Also checkout

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

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 number of neutrons present in ${}_{19}^{39}K$ are

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

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

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

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

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