Cathode rays contain a stream of

Question

Cathode rays contain a stream of

A. $n$

B. $r$

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

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

Share this question with your friends

Show all Atomic Structure MCQ

Comment

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

Discuss this answer

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

A. 1

B. 6

C. 7

D. 2

Discuss this answer

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

Discuss this answer

The size of nucleus is

A. $10^{- 12} m$

B. $10^{- 8} m$

C. $10^{- 15} m$

D. $10^{- 10} m$

Discuss this answer

A dipositive ion $Z^{+ +}$ has $2 e^{-}$ in the K shell, 8 e~ s in the L shell and $8 e^{-}$ in the M shell. Atomic number of Z is

A. 19

B. 20

C. 16

D. 15

Discuss this answer

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

Discuss this answer

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

Discuss this answer

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

A. 6

B. 4

C. 3

D. 1

Discuss this answer

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. $15 Å$

Discuss this answer

The possible values of l for an s orbital are

A. -1, +1

B. 0 to 2

C. -2 and + 1

D. 0

Discuss this answer

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

Discuss this answer

Isotopes have different

A. arrangement of electrons

B. no. of P and e'

C. no. of neutrons

D. no. of electrons

Discuss this answer

Mass of positron is the same to that of

A. proton

B. meson

C. electron

D. neutron

Discuss this answer

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

Discuss this answer

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

Discuss this answer

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. $n^{3}$

Discuss this answer

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

Discuss this answer

The number of unpaired electrons in fluorine atoms is/are

A. 4

B. 2

C. 1

D. 0

Discuss this answer

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

Discuss this answer

The corect 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

Discuss this answer

Wave number is defined as

A. $\frac{3}{λ}$

B. $\frac{λ^{2}}{n π}$

C. $\frac{h}{2 π}$

D. $\frac{1}{λ}$

Discuss this answer

Cathode rays contain a stream of

A. $n$

B. $r$

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

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

Discuss this answer

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

Discuss this answer

Isotones have same

A. mass number

B. nuclear mass

C. no. of neutrons

D. no. of electrons

Discuss this answer

Charge on an electron was shown by

A. J. J. Thomson

B. Kirchoff

C. Ohm

D. M.Planck

Discuss this answer

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

Discuss this answer

Which elements is represented by the following electronic configuration?

A. Nitrogen

B. Oxygen

C. Fluorine

D. Neon

Discuss this answer

The orbitals with maximum number of possible orientation is:

A. s

B. d

C. f

D. p

Discuss this answer

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

Discuss this answer

The interrelationship between matter and energy was given by

A. Rutherford

B. Joule

C. de Broglie

D. Einstein

Discuss this answer

Accepted Answer

D.

{}_{- 1}e^{0}

Cathode rays contain a stream of

Correct Answer :

Show all Atomic Structure MCQ

Related Questions

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

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

Davisson and Germer gave an experimental evidence for

The size of nucleus is

A dipositive ion $Z^{+ +}$ has $2 e^{-}$ in the K shell, 8 e~ s in the L shell and $8 e^{-}$ in the M shell. Atomic number of Z is

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

The wavelength of an electron

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

The possible values of l for an s orbital are

In Lyman series an electron jumps from higher energy level to

Isotopes have different

Mass of positron is the same to that of

Which of the following weighs the least?

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

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

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

The number of unpaired electrons in fluorine atoms is/are

The velocity of a photon is

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

Wave number is defined as

Cathode rays contain a stream of

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

Isotones have same

Charge on an electron was shown by

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

Which elements is represented by the following electronic configuration?

The orbitals with maximum number of possible orientation is:

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

The interrelationship between matter and energy was given by

Also checkout

Cathode rays contain a stream of

Correct Answer :

Show all Atomic Structure MCQ

Related Questions

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

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

Davisson and Germer gave an experimental evidence for

The size of nucleus is

A dipositive ion Z++ has 2e- in the K shell, 8 e~ s in the L shell and 8e- in the M shell. Atomic number of Z is

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

The wavelength of an electron

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

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 possible values of l for an s orbital are

In Lyman series an electron jumps from higher energy level to

Isotopes have different

Mass of positron is the same to that of

Which of the following weighs the least?

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

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

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

The number of unpaired electrons in fluorine atoms is/are

The velocity of a photon is

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

Wave number is defined as

Cathode rays contain a stream of

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

Isotones have same

Charge on an electron was shown by

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

Which elements is represented by the following electronic configuration?

The orbitals with maximum number of possible orientation is:

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

The interrelationship between matter and energy was given by

Also checkout

A dipositive ion $Z^{+ +}$ has $2 e^{-}$ in the K shell, 8 e~ s in the L shell and $8 e^{-}$ in the M shell. Atomic number of Z is

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

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

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