ATOMIC STRUCTURE

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Created on By buzzerkings

ATOMIC STRUCTURE

1 / 80

Which of the following species has the highest ionization potential?

2 / 80

The first ionization energy in electron volts of nitrogen and oxygen atom's are respectively given by:

3 / 80

The first ionization potentials of Na, Mg, Al and Si are in the order:

4 / 80

The correct order of second ionization energies of C, N, O and F is:

5 / 80

The electron configuration of elements A, B and C are [He]2s¹, [Ne]3s¹ and [Ar]4s¹ respectively. Which one of the following order is correct for the first ionization potentials (in kJ mol-1) of A, B and C?

6 / 80

The first ionization potential of four consecutive elements, present in the second period of the periodic table are 8.3, 11.3, 14.5 and 13.6 eV respectively. Which one of the following is the first ionization potential (in eV) of nitrogen?

7 / 80

Which of the following order is correct for the first ionization energies of following elements?

8 / 80

The ionization enthalpy of hydrogen atom is 1.312 x 10^6 Jmol-1. The energy required to excite the electron in the atom from n = 1 to n = 2 is:

9 / 80

Atomic number of chromium is 24, then Cr3+ will be:

10 / 80

Which of the following electronic configuration is not possible?

11 / 80

In a chromium atom, how many electrons have zero azimuthal quantum number?

12 / 80

Consider the ground state of Cr atom (Z=24), the number of electrons with the azimuthal quantum numbers 1 = 1 and 2 are, respectively:

13 / 80

Which of the following relates to photon both as wave motion and as a stream of particles? 

14 / 80

The first use of quantum theory to explain the structure of atom was made by:

15 / 80

When the electron of a hydrogen atom jumps from the n = 4 to the n = 1 state, the number of spectral lines emitted is:

16 / 80

Degenerate orbitals are those that contain same: 

17 / 80

The maximum number of electrons that may be present in all atomic orbitals with principal quantum number 3 and azimuthal quantum number 2 is:

18 / 80

Maximum number of electrons in a subshell of an atom is determined by the following:

19 / 80

The number of d electrons in Cu+ (atomic number =29) that can have the spin quantum (-1/2) is:

20 / 80

When the value of the azimuthal quantum number is 3, the maximum and the minimum values of the spin multiplicities are:

21 / 80

The quantum numbers of +1/2 and -1/2 for the electron spin represent: 

22 / 80

Which of the following sets of quantum numbers is correct for an electron in 4f orbital? 

23 / 80

The correct set of four quantum numbers for the valence electrons of rubidium atom (Z=37) is:

24 / 80

The electrons identified by quantum numbers n and 1:

(A) n = 4, 1=1

(B) n = 3, 1=2.

(C) n = 4, 1=0 

(D) n = 3, 1=1

Can be placed in order of increasing energy as:

25 / 80

Which of the following nuclides are most likely to be neutron poor?

26 / 80

A nuclear reaction must be balanced in terms of:

27 / 80

The more stable isotope of sodium is 23Na. The atom 24Na can undergo radioactive decay via:

28 / 80

The maximum number of electrons with clockwise spin that can be accommodated in "N" shell is:

29 / 80

An orbit differs from an orbital as:

30 / 80

The correct electronic configuration of chromium (Z=24) is:

31 / 80

Which electronic level would allow the hydrogen atom to absorb a photon but not emit a photon?

32 / 80

In which of the following orbitals, lobes lies on the axis:

33 / 80

The value of four quantum numbers of valence electron of an element is n =4, l =0, m=0 and

s = +1/2.The element is:

34 / 80

The maximum number of electrons with n = 3 and l= 2 is:

35 / 80

Which specie is diamagnetic? 

36 / 80

What is the electronic configuration for Fe2+?

37 / 80

Which set of quantum numbers corresponds to an electron in a 4p orbital?

 

38 / 80

Which electron is most shielded from nuclear charge?

39 / 80

Which set of three quantum numbers does not specify an orbital in the hydrogen atom?

40 / 80

Atomic orbitals having same energy are called: 

41 / 80

Which of the following quantum number explains the shape of orbitals?

42 / 80

What will be the atomic number of an element having maximum number of unpaired electrons in p-sub shell?

43 / 80

The value of magnetic quantum number (Q.N) is directly determined by the value of: 

44 / 80

The orbital diagram violated is in which Hund's rule is

45 / 80

The electron density between 1s and 2s orbital is:

46 / 80

The electron configuration of an element is 1s^2 2s^2 2p^6 3s^2 3p^6 3d^5 4s^1:

47 / 80

How many electrons can be accommodated in p orbitals? 

48 / 80

Quantum number of an atom can be defined on the basis of:

49 / 80

The correct set of quantum numbers is:

50 / 80

Which set has same number of unpaired electrons?

51 / 80

With increase in the value of principal quantum number 'n', the shape of the s-orbitals remains the same although their sizes:

52 / 80

The relative energies of 4s, 4p and 3d orbitals are in the order:

53 / 80

Aluminium foil causes cathode rays to:

54 / 80

By e/m ratio of cathode rays we deduce, they are:

55 / 80

Cathode rays produced yellow fluorescence when strike: 

56 / 80

A fast moving neutron can eject from nitrogen:

57 / 80

Positive charge is an essential part of an atom and is:

58 / 80

Cathode rays when fall upon certain chemical substance? Carry out the reactions the reason is that the cathode rays: 

59 / 80

The identity of a chemical element is determined by which of the following?

60 / 80

From the discharge tube experiment, it is concluded that: 

61 / 80

62 / 80

63 / 80

Free neutron decays into a proton with the emission of an electron and:

64 / 80

Negative charge on cathode rays was established by:

65 / 80

66 / 80

A proton is identical with:

67 / 80

The atomic number of an element is 35. What is the total number of electrons present in all the p orbitals of the ground state atom of that element?

68 / 80

If S1 be the specific charge (e/m) of cathode rays and S be that of positive rays then which is true?

69 / 80

Which of the following is used for the treatment of cancer?

70 / 80

In Millikan's oll drop method the oil drop becomes negatively charged: 

71 / 80

The nature of the positive rays produced vacuum discharge tube depends upon:

72 / 80

The highest value of e/m of anode rays has been observed when the discharge tube is filled with:

73 / 80

Cathode rays are: 

74 / 80

When paddle is placed in the path of cathode rays, these rays drive this paddle wheel, this observation shows that

75 / 80

e/m ratio of positive rays is ___ than that of cathode rays:

76 / 80

Of the following sets which one does NOT contain isoelectronic species?

77 / 80

Which set of wavelength for light are arranged in order of increasing frequency?

78 / 80

3. What is the charge of the ion most commonly formed by S?

79 / 80

Which kind of electromagnetic contains the greatest energy per photon?

80 / 80

Which pair of ions has the same total number of electrons?

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