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Prof Temmy's questions on chemical bonding

Total questions: 76

Worksheet time: 1hrs 2mins

Name
Class
Date
1.

Bonding in electrolyte is _____ and ______ in non electrolyte

a)

Covalent & ionic

b)

Dative & covalent

c)

Dative & ionic

d)

Electrovalent & covalent

2.

The alkali metals that rolls with duplect structure is

a)

Calcium and lithium

b)

Boron and lithium

c)

Lithium and beryllium

d)

Beryllium and boron

3.

During ionisation ___ and _______ exhibit krypton and xenon structure respectively

a)

Rb + and Sr+

b)

Rb+ and Cs+

c)

Te- and Br-

d)

CS+ and Ba²+

4.

Captions having 18 electrons in there outermost shell violate what ?

a)

Pauli's exclusive principal

b)

Aufbauf's principal

c)

Octet rule

d)

Chemical bonding rule

5.

What are the three deviations from octet rule except

a)

Captions having 18 electrons in there outermost shell

b)

Cations having 2 electron in there outermost shell with 17 electrons preceding it

c)

Cations of transitional metals having 9 to 17 electrons in there outermost shell

d)

Cations having 18 valence electrons

6.

The two electron in the outermost shell that was being preceded by 18 electron (from the deviation of octed rules) are called what?

(a)  

7.

Inert pair electron is common in ?

a)

Light metals

b)

Heavy metals

c)

Transitional elements

d)

Noble gases

8.

TLcl is sparingly soluble in water due to ?

a)

Inert pair electron

b)

Hydrogen bonding

c)

Weak force of attraction

d)

Ionic bonding

9.

Cations having 9 to 17 electrons in there outermost shell include

(a)  

10.

The modern concept of chemical bonding are base on?

a)

Attaining noble gas structure

b)

Energetic of reactions

c)

To become ion

d)

To form a product

11.

Ionic bonds are hold together by ?

a)

Columbs force

b)

Electrostatic force

c)

Polar forces

d)

Dipole dipole forces

12.

Ionic compounds are soluble in (a)   and covalent compounds are soluble in

13.

Covalent bond had electronegativity of _____

a)

>0.7

b)

<0.7

c)

<1.7

d)

>1.7

14.

The greater the electronegativity difference........

a)

The higher the ionic bond

b)

The higher the covalent bond

c)

The higher the dative bond

d)

No changes to both ionic and covalent

15.

______ element has the least most electronegativity and _____ has the most electronegativity

a)

Ceasium & fluorine

b)

Fluorine and ceasium

c)

Fluorine and sodium

d)

Calcium and fluorine

16.

Bond between similar electronegativity elements is

(a)  

17.

AlF3 is electrovalent and Al2Cl3 is covalent because of the following except

a)

Chlorine is less electronegative than fluorine

b)

Fluorine atom and ion is smaller than that of chlorine

c)

Crystal lattice energy between Al and fluorine is more than that of Al and chlorine

d)

Chlorine forms a weaker bond than fluorine

18.

In O2 molecule, how many sigma & pie bond

a)

1 &1

b)

1&2

c)

2&1

d)

3&1

19.

How many pie bond and Sigma bond is in tripple bond

a)

2 &1

b)

1 &2

c)

3& 1

d)

1&1

20.

During hybridisation

a)

Old but equal hybrid orbital are formed

b)

New but equal hybrid orbital are formed

c)

Complex orbital that are new are formed

d)

Old but unequal orbit are formed

21.

What's the value for Px Py and Pz in Oxygen

a)

1,1,2

b)

2,1,2

c)

1,2,1

d)

2,1,1

22.

Energy in kg/mol in ionic is

a)

>>> 1000

b)

100-900

c)

20 -50

d)

Less than 20

23.

Energy in kg/mol in covalent is

a)

1000

b)

100-900

c)

20 to 50

d)

Less than 20

24.

Hydrogen bonding effect involves

a)

High boiling point

b)

Very low boiling point

c)

Low versatility

d)

I don't know

25.

High boiling point due to hydrogen bonding doesn't work in the following except

a)

In noble gases when boiling point increase with molar weight

b)

Down the group in alkane

c)

Hydrides of group 5

d)

None of the above

26.

Overlap of electrons forms

a)

Sigma bond

b)

Pie bond

c)

Both sigma and pie

d)

None of the above

27.

_____ and _____ forms the simplest form of covalent bonding

a)
Halogen and hydrogen
b)

Hydrogen and oxygen

c)

Halogen and oxygen

d)

Oxygen and helium

28.

Which one is stronger Pie bond or sigma bond

a)

Pie

b)

Sigma

c)

Equal strength

d)

Questions for the gods

29.

_______ is not attracted to objects in the magnetic field

a)

Paramagnetic

b)

Ferromagnetic

c)

Diamagnetic

d)

Ferromagnetic and diamagnetic

30.

How many lone pair and bond pair in XeF2

a)
2 bond pair, 3 lone pair
b)

3 bond pair, 2 lone pair

c)

3 bond pair, 3 lone pair

d)

2 bond pair, 2 lone pair

31.

How many sigma bond and pie bond are in C2H2

a)

5 sigma 1 pie

b)

2 sigma 1 pie

c)

3 sigma 3 pie

d)

3 sigma 6 pie

32.

______ I use to make pie bond ?

a)

Hybridized orbital

b)

Unhybridized orbital

c)

Both

d)

None of the above

33.

Carbon is SP____ hybridized

a)

3

b)

4

c)

2

d)

1

34.

If RAM of boron is 10.2, ¹¹B , ¹⁰B, if the atomic number of boron is 5 , what's the percentage abundance of the two respectively

a)

20% 80%

b)

70% 30%

c)

80% 20%

d)

30% 70%

35.

Polarity occurs when

(a)  

36.

Mention 3 carbon compounds with net dipole of zero

(a)  

37.

_____ and ______ are the covalent compounds that are soluble in water

a)

Alkanones and alkanoic

b)

Amines and Ester

c)

Sugar and alkanoic

d)

Sugar and esters

38.

Which bond is the weakest

a)

London force

b)

Van da Waals

c)

Ionic

d)

Dative

39.

Which force is responsible for liquefaction of non polar solvent

a)

London force

b)

Ionic bonds

c)

Covalent

d)

Van da waals

40.

What's the increasing order of hydrogen bonding in halogens

a)

F-Cl-Br-I

b)

Br-Cl -Br-I

c)

I-Br-Cl-F

d)

F-Br-I-Cl

41.

Infra red spectrum is found in

a)

N=3

b)

N=1

c)

N= 4

d)

N= 3 and N= 4

42.

Electrons absorb wavelength in form of

a)

Light

b)

Wave

c)

Photon

d)

None of the above

43.

Which of the following statement is correct about chemical bonding Except

a)

It's a weak or strong attraction between two ions

b)

It's a weak or strong attraction between two electrons

c)

Bonding in electrolyte is ionic bonding in non electrolyte is covalent

d)

No correct option

44.

Which of the following is least possible in ionic bonding

a)

Alkali earth metals that loose there electron to attain octet structure

b)

Non metals that looses electron to attain octet structure

c)

Non metals that gain electron to attain octet structure

d)

Atoms can loose the electron in there outermost shell to attain octet structure

45.

Which of the following is not correct about electrovalent bond

a)

A bond is formed by the complete transfer of electron from one to another

b)

A bond is formed by sharing of electron

c)

The ions involved are joined together by columbs force

d)

Low volatility among compound exhibiting the bond

46.

Which of the following statement is wrong about covalency

a)

Non metallic can't form covalency

b)

Covalent bond involve sharing of electron

c)

The difference in electronegativity value must be less than 1.7

d)

The greater the electronegativity the higher the tendeny of forming electrovalency

47.

Which of the following statement is wrong

a)

Sigma bond is stronger than pie bond

b)

Pie bond are formed through head to head overlap of orbitals

c)

Sigma bonds are form through head to head overlapping of orbitals

d)

None of the above

48.

In N2 molecule and O2 molecules

How many pie bonds and sigma bond respectively

a)

1 sigma 3 pie , 1 sigma 2 pie

b)

1 sigma 2 pie, 1 sigma 1 pie

c)

2 sigma 2 pie , 1 sigma 1 pie

d)

3 sigma 2 pie , 2 pie 1 sigma

49.

Using Columbs law, Arrange ( NAI, NACl, NaF,NaBr) in increasing ionic character

a)

NAI, NACl, NaF, NaBr

b)

NaF, NACl,NaBr, NaI

c)

NABr, NaCl, NaF, NaI

d)

None of the above

50.

BeCl has shape and angle of ?

a)

Linear 180⁰

b)

120⁰ trigonal planar

c)

109.5⁰ tetrahedral

d)

120 linear

51.

List the 8 shapes of molecules, the angle and the compound involved

(a)  

52.

Kindly skip

(a)  

53.

Resonance structures can be obtained in

a)

SO2 and CO3 -

b)

SO3 and CO2

c)

SO3 and CO3–

d)

SO2 and CO2

54.

How many electrons will be found in the nucleus of an atom with mass number of 23 and neutron number of 17?

a)

6

b)

7

c)

8

d)

None

55.

What is the correct Lewis structure for BF3?

a)
b)
c)
d)

BF3 (The formula is the Lewis Structure)

56.

Which of the following types of elements can exist in monatomic form?

a)

alkali metals

b)

transition metals

c)

halogens

d)

noble gases

57.
What type of bond is illustrated above?
a)
Metallic
b)
Ionic
c)
Covalent
d)
Wiggly
58.

A mixture of two or elements at least one of which is a metal is called

a)

an ion

b)

an alloy

c)

steel

d)

a crystal

59.

A compound is made of two nonmetals. It is

a)

ionic

b)

metallic

c)

covalent

60.

Ionic compounds are held together by

a)

intermolecular forces

b)

electrostatic forces

c)

magnetic forces

d)

nuclear forces

61.

Which compound is held together by electrostatic forces?

a)

NO2

b)

CaSO4

c)

Aluminum

d)

P4O10

62.

Which compound would have a very low melting point?

a)

sodium chloride

b)

copper (II) sulfate

c)

sulfur dioxide

d)

aluminum

63.

Which compound would be a good conductor when in solution?

a)

aluminum

b)

sulfur dioxide

c)

ammonia

d)

sodium nitrate

64.

What is the chemical name for NI3 ?

a)

Nitrogen hydroxide

b)

Nitrogen trinitride

c)

Nitrogen triiodide

d)

Triiodide mononitrogen

65.

What is a polar covalent bond?

a)

A polar covalent bond is a type of chemical bond where there is no sharing of electrons between two atoms.

b)

A polar covalent bond is a type of chemical bond where electrons are equally shared between two atoms.

c)

A polar covalent bond is a type of chemical bond where electrons are unequally shared between two atoms.

d)

A polar covalent bond is a type of chemical bond where electrons are transferred from one atom to another.

66.

Ammonium ion (NH4+) is an example for

a)

Covalent compound

b)

Ionic compound

c)

Coordinate compound

d)

Metallic compound

67.

Coordinates bonds are also called ..

a)

ionic bonds

b)

covalent bonds

c)

Dative bonds

d)

Metallic bonds

68.

Which correctly describes the molecular polarity of water?

a)

nonpolar and symmetrical

b)

nonpolar and asymmetrical

c)

polar and symmetrical

d)

polar and asymmetrical

69.

Which of the following forms a nonpolar covalent bond?

a)

Br2

b)

HBr

c)

NaBr

d)

PBr3

70.
Which of these is NOT an alloy?
a)
bronze
b)
copper
c)
brass
d)
stainless steel
71.
What is the basis of a metallic bond?
a)
the attraction of neutral metal atoms.
b)
the attraction between protons and neutrons.
c)
the attraction between positive metal ions and interlocking electrons.
d)
the attraction between positive metal ions and free floating electrons.
72.

Two carbon atoms form a linear shaped ethene, C2H4, molecule when bonded with four other hydrogen atoms. Prior to bonding, the carbon atom

a)

does not hybridise

b)

undergoes sp hybridisation

c)

undergoes sp2 hybridisation

d)

undergoes sp3 hybridisation

73.

The molecule that uses sp3d hybrid orbital on the central atom is

a)

BCl3

b)

NCl3

c)

ICl3

d)

PCl3

74.

The hybridisation of the central atom in the following molecules is same EXCEPT

a)

NH3

b)

H2O

c)

AlCl3

d)

C2H6

75.

Which of the following hybrid orbitals is used by the central atom for bonding in CO32-?

a)

sp2

b)

sp3

c)

sp3d

d)

sp3d2

76.

Molecule CO2

a)

undergoes sp2 hybridisation

b)

has 2 σ bond and 2 π bond

c)

undergoes sp3d hybridisation

d)

is trigonal planar molecule

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