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

Question

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

Correct Answer :

B. 20

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Comment

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

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Which elements is represented by the following electronic configuration?

B. Oxygen

D. Neon

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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 interrelationship between matter and energy was given by

B. Joule

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Charge on an electron was shown by

C. Ohm

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

A. $n^{2}$

B. $2 l + 1$

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

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Isotones have same

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

A. Planck

D. Joule

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

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The velocity of a photon is

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

A. 1

B. 6

C. 7

D. 2

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

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Davisson and Germer gave an experimental evidence for

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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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Which of the following has the highest mass?

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Which of the following weighs the least?

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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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Wave number is defined as

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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 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

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The fundamental particle that has least mass is

A. meson

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The size of nucleus is

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

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

A. Balmer

C. Pfund

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Isotopes have different

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Answer 1

A.

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

Answer 2

B.

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

Answer 3

C.

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

Answer 4

D.

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

Answer 5

A. Nitrogen

Answer 6

C. Fluorine

Answer 7

A. Rutherford

Answer 8

C. de Broglie

Answer 9

D. Einstein

Answer 10

A. J. J. Thomson

Answer 11

B. Kirchoff

Answer 12

D. M.Planck

Answer 13

C.

4 (2 l + 3)

Answer 14

D.

\sqrt{2 n^{3}}

Answer 15

A.

[A r] 3 d^{9}

Answer 16

B.

[A r] 3 d^{10}

Answer 17

C.

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

Answer 18

D.

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

Answer 19

A. mass number

Answer 20

B. nuclear mass

Answer 21

C. no. of neutrons

Answer 22

D. no. of electrons

Answer 23

B. Rutherford

Answer 24

C. Einstein

Answer 25

A. Hund's rules

Answer 26

B. Flemming rule

Answer 27

C. Pauli's exclusion principle

Answer 28

D. Bohr theory

Answer 29

A. dependent on its wavelength

Answer 30

B. dependent on its source

Answer 31

C. equal to cube of its amplitude

Answer 32

D. independent of its wavelength

Answer 33

A.

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

Answer 34

B.

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

Answer 35

C.

3 \times 10^{14} M H z

Answer 36

D.

4 \times 10^{6} H z

Answer 37

A. wave nature of electron

Answer 38

B. particle nature of electron

Answer 39

C. particle nature of light

Answer 40

D. wave nature of light

Answer 41

A. Neutron

Answer 42

B. Alpha particle

Answer 43

C. Electron

Answer 44

D. Deuterium

Answer 45

A. 1 g of

C O_{2}

Answer 46

B. 2 litres of

C O_{2}

at N.T.P.

Answer 47

C.

3.01 \times 10^{11}

molecules of

C O_{2}

Answer 48

D.

3.01 \times 10^{22}

atoms of carbon

Answer 49

A.

\frac{3}{λ}

Answer 50

B.

\frac{λ^{2}}{n π}

Answer 51

C.

\frac{h}{2 π}

Answer 52

D.

\frac{1}{λ}

Answer 53

B. alpha-particle

Answer 54

C. electron

Answer 55

D. neutron

Answer 56

A.

10^{- 12} m

Answer 57

B.

10^{- 8} m

Answer 58

C.

10^{- 15} m

Answer 59

D.

10^{- 10} m

Answer 60

A. 40 protons and 20 electrons

Answer 61

B. 20 protons and 40 electrons

Answer 62

C. 20 protons and 40 neutrons

Answer 63

D. 20 protons and 20 neutrons

Answer 64

B. Paschen

Answer 65

D. None of these

Answer 66

A. arrangement of electrons

Answer 67

B. no. of P and e'

Answer 68

C. no. of neutrons

Answer 69

D. no. of electrons

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

Correct Answer :

Show all Atomic Structure MCQ

Related Questions

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

Which elements is represented by the following electronic configuration?

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 interrelationship between matter and energy was given by

Charge on an electron was shown by

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

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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Isotones have same

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

The number of unpaired electrons in fluorine atoms is/are

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

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

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

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

Davisson and Germer gave an experimental evidence for

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

Which of the following has the highest mass?

Which of the following weighs the least?

The orbitals with maximum number of possible orientation is:

Wave number is defined as

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

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

The fundamental particle that has least mass is

The size of nucleus is

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

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

Isotopes have different

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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

Correct Answer :

Show all Atomic Structure MCQ

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

Which elements is represented by the following electronic configuration?

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 interrelationship between matter and energy was given by

Charge on an electron was shown by

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

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Electronic configuration of Cu+ is

Isotones have same

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

The number of unpaired electrons in fluorine atoms is/are

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

The velocity of a photon is

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

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

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

Davisson and Germer gave an experimental evidence for

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

Which of the following has the highest mass?

Which of the following weighs the least?

The orbitals with maximum number of possible orientation is:

Wave number is defined as

The charge on an atom of A1327l is

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

The fundamental particle that has least mass is

The size of nucleus is

The number of neutrons present in K1939 are

In the nucleus of C20a40 there are

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

Isotopes have different

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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

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 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

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

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

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

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