CHEMICAL BONDING

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Created on By buzzerkings

CHEMICAL BONDING

1 / 81

On hybridization of one s-orbital and one p-orbital, we get;

2 / 81

Which of the following have same shape as NH2+?

3 / 81

According to VSEPR theory, the most probable shape of the molecule having 4 electron pairs in the outermost shell of the central atom is

4 / 81

Shape of NH3 is very similar to:

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Carbon dioxide is isostructural with:

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Predict the molecular geometry and polarity of the SO molecule by applying VSEPR theory: 

7 / 81

A molecule has a central atom surrounded by 2 lone pairs and 3 atoms. The best description for the shape of the molecule is: 

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In which of the following molecules/ions are all the bonds not equal? 

9 / 81

Which types of bonding is present in NH4Cl?

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The bond present in N2O5 is:

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As compared to covalent compounds, electrovalent compounds generally have:

12 / 81

Which of these contains both polar and non- polar bonds?

13 / 81

Among the following the maximum covalent character is shown by the compound: 

14 / 81

What is the effect of more electronegative atom on the strength of ionic bond?

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What is the nature of chemical bonding between Cs and F? 

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The pair of elements forms ionic bond is:

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Which of the following is least ionic?

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Most favourable conditions for the formation of an ionic bond is:

19 / 81

Lattice energy of an ionic compound depends upon:

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Element A has three electrons in the outermost orbit and B has six electrons in the outermost orbit. The formula of the compound will be:

21 / 81

Sodium is much more apt to exist as a cation than is chlorine. This is because:

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Of the following elements, ___ has the most negative electron affinity:

23 / 81

What refers to the measure of the atom's tendency to attract an additional electron?

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The ionization energy is ___ to the size of an atom. 

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The electron affinity values (in kJ mol^-1) of three halogens X, Y and Z are respectively -349, -322 and -325. Then X, Y and Z respectively are: 

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For electron affinity of halogens, which of the following is correct? 

27 / 81

Energy released when an electron adds to an empty orbital of an isolated gaseous atom is:

28 / 81

When atomic radius increases electron affinity:

29 / 81

Removing an electron from sodium is an process and adding an electron to chlorine is an process:

30 / 81

Which of the following atoms would have the largest second ionization energy?

31 / 81

Which equation correctly represents the first ionization of aluminum?

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Which of the following would have the lowest first ionization energies? 

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Second ionization energy:

34 / 81

Electrons always reside in certain energy level outside: 

35 / 81

There is less attraction between fifth electron of Boron and nucleus, hence that electron reside in:

36 / 81

Force of attraction between nucleus and electrons increases across periods because:

37 / 81

Ionization energy between last element of one period and first element of next period receives a rapid:

38 / 81

Magnitude of ionization energy depends upon:

39 / 81

The first four ionization energies of an element Z are 738, 1451, 7730 and 10541 kJmol^–1. Which one of following ions is most likely to be formed when Z reacts with fluorine?

40 / 81

Why ionization energy of beryllium is greater than that of lithium? 

41 / 81

Which of following will show maximum penetration effect?

42 / 81

Arrange the following elements from lowest to highest ionization energy Be, Mg, Ca, Sr:

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The outermost of most electronegative element is:

44 / 81

Which property decreases as you move down a column in the periodic table?

45 / 81

For which element is the gaining of an electron most exothermic?

46 / 81

Arrange these elements in order of increasing first ionization energy: Cl, Sn & Si

47 / 81

The ionization energy is/are inversely related to:

I.atomic radius II. nuclear charge III. Shielding effect of inner electron

48 / 81

Which of the species given below violates the octet rule?

49 / 81

In which of the following pairs of atoms, ionic bond is formed?

50 / 81

If electronegativity of A is 2.0 and that of B is 3.0, what is the covalent character percentage of the bond A-B?

51 / 81

Strongest bond among the following is:

52 / 81

When bond order increases then bond length becomes and bond becomes

53 / 81

In H-F bond electronegativity difference is 1.9 What is the type of this bond? 

54 / 81

Polarization of ions is governed by:

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The compound which has minimum electronic repulsion is:

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Which of the following contains maximum number of lone pairs?

57 / 81

Which overlapping may not lead to sigma bond formation?

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When water donates its electrons pair to hydrogen ion form hydronium ion, hybridizations is changed from: to

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Which one has the least bond angle?

60 / 81

Which of the following involve ionic bonding only?

61 / 81

The bond angles in NH3 and NF3 molecules have relationship:

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Covalent bond maybe regarded as:

63 / 81

Which molecule has a linear arrangement of all component atoms?

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The ionization energy is to the size of an atom.

65 / 81

For electron affinity of halogens, which of the following is correct?

66 / 81

When atomic radius increases electron affinity:

67 / 81

Removing an electron from sodium is an ___ process and adding an electron to chlorine is an ___ process:

68 / 81

Which of the following atoms would have the largest second ionization energy?

69 / 81

Which equation correctly represents the first ionization of aluminum?

70 / 81

Which of the following would have the lowest first ionization energies?

71 / 81

Electron's always reside in certain energy level outside:

72 / 81

Force of attraction between nucleus and increases across periods because:

73 / 81

Ionization energy between last element of one period and first element of next period receives a rapid:

74 / 81

Magnitude of ionization energy depends upon:

75 / 81

The first four ionization energies of an element Z are 738, 1451, 7730 and 10541 kJmol. Which one of following ions is most likely to be formed when Z reacts with fluorine?

76 / 81

Which of following will show maximum penetration effect?

77 / 81

The outermost configuration of most electronegative element is: 

78 / 81

Which property decreases as you move down a column in the periodic table? 

79 / 81

For which element is the gaining of an electron most exothermic? 

80 / 81

Which of the following species has highest ionization potential?

81 / 81

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

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