Chemical Bonding: Master the Basics of Molecular Interactions

Question 1

Identify the molecule with a tetrahedral molecular geometry:

Accepted Answer

CH₄

Answer

NH₃

Answer

H₂O

Answer

CO₂

Question 2

Which type of bond is typically the weakest?

Accepted Answer

Hydrogen bond

Answer

Ionic bond

Answer

Covalent bond

Answer

Metallic bond

Question 3

Determine the bond order of a triple bond:

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 4

Which type of bond is formed between a metal and a non-metal?

Accepted Answer

Ionic bond

Answer

Covalent bond

Answer

Metallic bond

Answer

Hydrogen bond

Question 5

What is the electron configuration of a chlorine ion?

Accepted Answer

[Ar]3s²3p⁶

Answer

[Ne]3s²3p⁵

Answer

[Ar]4s²4p⁵

Answer

[Xe]5s²5p⁶

Question 6

Which statement accurately describes a compound with ionic bonding?

Accepted Answer

Formed between a metal and a non-metal

Answer

Formed between non-metals

Answer

High melting and boiling points

Answer

Electrons are shared between atoms

Question 7

Which of the following molecules has a linear molecular geometry?

Accepted Answer

CO2

Answer

H2O

Answer

NH3

Answer

CH4

Question 8

Which hybridization is associated with a trigonal planar molecular geometry?

Accepted Answer

sp2

Answer

sp

Answer

sp3

Answer

sp3d

Question 9

Which of the following is NOT a factor affecting bond strength?

Accepted Answer

Number of unpaired electrons

Answer

Bond length

Answer

Electronegativity difference

Answer

Type of atoms involved

Question 10

What is the correct order, from strongest to weakest, of the following types of intermolecular forces?

Accepted Answer

Hydrogen bonding, dipole-dipole interactions, London dispersion forces

Answer

Dipole-dipole interactions, London dispersion forces, hydrogen bonding

Answer

Hydrogen bonding, London dispersion forces, dipole-dipole interactions

Answer

London dispersion forces, dipole-dipole interactions, hydrogen bonding

Question 11

Which of the following is NOT a primary type of chemical bond?

Accepted Answer

Van der Waals

Answer

Ionic

Answer

Covalent

Answer

Metallic

Question 12

What is the bond order of a double bond?

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 13

Which of the following factors does NOT affect bond strength?

Accepted Answer

Atomic number

Answer

Bond length

Answer

Bond order

Answer

Electronegativity

Question 14

What is the hybridization of the carbon atom in CH₂O?

Accepted Answer

sp²

Answer

sp

Answer

sp³

Answer

sp³d

Question 15

What is the shape of a molecule with a trigonal planar electron pair geometry?

Accepted Answer

Trigonal planar

Answer

Linear

Answer

Tetrahedral

Answer

Trigonal pyramidal

Question 16

Which substance has a covalent bond?

Accepted Answer

Water

Answer

Sodium chloride

Answer

Calcium oxide

Answer

Iron

Question 17

What is the polarity of a bond between a more electronegative atom and a less electronegative atom?

Accepted Answer

Polar covalent

Answer

Non-polar

Answer

Ionic

Answer

Metallic

Question 18

Which property is NOT a characteristic of ionic compounds?

Accepted Answer

Covalent bonding

Answer

High melting and boiling points

Answer

Good electrical conductivity in the molten state

Answer

Solubility in water

Question 19

Which factor does NOT influence the polarity of a chemical bond?

Accepted Answer

Atomic mass of the bonded atoms

Answer

Electronegativity difference between atoms

Answer

Distance between the bonded atoms

Answer

Geometry of the molecule containing the bond

Question 20

Which of the following is NOT a type of intermolecular force?

Accepted Answer

Ionic bonding

Answer

Dipole-dipole interactions

Answer

Hydrogen bonding

Answer

London dispersion forces

Question 21

Which of the following compounds exhibits covalent bonding?

Accepted Answer

CH₄

Answer

MgO

Answer

LiF

Answer

NaCl

Question 22

Identify the correct Lewis structure for carbon dioxide (CO₂) molecule:

Accepted Answer

O=C=O

Answer

O::C:O

Answer

:O::C::O:

Answer

:O=C=O.

Question 23

Which molecular geometry describes the shape of ammonia (NH₃)?

Accepted Answer

Trigonal pyramid

Answer

Bent

Answer

Tetrahedral

Answer

Linear

Question 24

What type of bond results from the electrostatic attraction between oppositely charged ions?

Accepted Answer

Ionic bond

Answer

Hydrogen bond

Answer

Covalent bond

Answer

Metallic bond

Question 25

Which property is characteristic of polar covalent bonds?

Accepted Answer

Unequal sharing of electrons

Answer

High melting point

Answer

Metallic luster

Answer

Delocalized electrons

Question 26

Which element exhibits the highest electronegativity value?

Accepted Answer

Fluorine

Answer

Chlorine

Answer

Bromine

Answer

Oxygen

Question 27

What type of bonding is formed between atoms of metallic elements?

Accepted Answer

Metallic bond

Answer

Covalent bond

Answer

Ionic bond

Answer

Hydrogen bond

Question 28

Which of the following molecules experiences the weakest intermolecular forces?

Accepted Answer

CH₄

Answer

H₂O

Answer

HF

Answer

NH₃

Question 29

What is a consequence of resonance in molecules?

Accepted Answer

Increased stability

Answer

Decreased bond length

Answer

Reduced dipole moment

Answer

Lowered electronegativity

Question 30

Which compound below is formed by the transfer of electrons between atoms?

Accepted Answer

NaCl

Answer

CH₄

Answer

H₂O

Question 31

What characteristic is associated with metallic bonds?

Accepted Answer

Delocalized electrons

Answer

Strong electrostatic forces

Answer

Localized electrons

Question 32

Which molecular geometry is associated with the Lewis structure X-Y-X?

Accepted Answer

Linear

Answer

Tetrahedral

Answer

Bent

Answer

Trigonal planar

Question 33

Which type of bond is generally the strongest and involves the complete transfer of electrons?

Accepted Answer

Ionic bond

Answer

Metallic bond

Answer

Hydrogen bond

Answer

Covalent bond

Question 34

In methane (CH₄), what hybridization scheme describes the bonding around the carbon atom?

Accepted Answer

sp³

Answer

sp³d

Answer

sp²

Answer

sp

Question 35

Which type of bond is formed by the sharing of electrons between nonmetallic atoms?

Accepted Answer

Covalent bond

Answer

Hydrogen bond

Answer

Ionic bond

Answer

Metallic bond

Question 36

What type of bond is formed between potassium (K) and bromine (Br)?

Accepted Answer

Ionic bond

Answer

Hydrogen bond

Answer

Metallic bond

Answer

Covalent bond

Question 37

Which of the following represents the correct Lewis structure for carbon dioxide (CO₂)?

Accepted Answer

O=C=O

Answer

O=C-O

Answer

O-C-O

Answer

O-C=O

Question 38

According to VSEPR theory, which molecule has a trigonal planar shape?

Accepted Answer

Boron trifluoride (BF₃)

Answer

Ammonia (NH₃)

Answer

Water (H₂O)

Answer

Methane (CH₄)

Question 39

Which statement accurately describes a key feature of covalent bonds?

Accepted Answer

Covalent bonds involve the sharing of electrons between atoms.

Answer

Covalent bonds are generally weaker than ionic bonds.

Answer

Covalent bonds are formed between metals and nonmetals.

Answer

Covalent bonds result from the transfer of electrons between atoms.

Question 40

Which of these molecules exhibits a dipole moment?

Accepted Answer

Water (H₂O)

Answer

Carbon dioxide (CO₂)

Answer

Boron trifluoride (BF₃)

Answer

Methane (CH₄)

Question 41

In metallic bonding, electrons are...

Accepted Answer

delocalized throughout the entire metal structure.

Answer

transferred from one atom to another.

Answer

shared between two specific atoms.

Answer

localized to individual atoms.

Question 42

Which of the following is a classic example of a network covalent solid?

Accepted Answer

Diamond

Answer

Graphite

Answer

Sodium chloride

Answer

Iron

Question 43

A molecule with a central atom having four electron domains and two lone pairs will have what shape?

Accepted Answer

Bent or V-shaped

Answer

Linear

Answer

Trigonal pyramidal

Answer

Tetrahedral

Question 44

Which of the following bonds has the highest polarity?

Accepted Answer

H-F

Answer

H-Cl

Answer

H-Br

Answer

H-I

Question 45

Which of the following compounds is formed by a covalent bond?

Accepted Answer

H2O

Answer

LiF

Answer

CaO

Answer

NaCl

Question 46

Which of the following correctly describes the hybridization of the carbon atom in CH4?

Accepted Answer

sp3

Answer

sp

Answer

sp3d

Answer

sp2

Question 47

Which of the following molecules has a linear shape?

Accepted Answer

CO2

Answer

NH3

Answer

H2O

Answer

CH4

Question 48

What is the bond order of N2?

Accepted Answer

3

Answer

2

Answer

4

Answer

1

Question 49

What is the oxidation state of sulfur in H2SO4?

Accepted Answer

+6

Answer

+4

Answer

-2

Answer

+2

Question 50

Which of the following ions has the largest ionic radius?

Accepted Answer

I-

Answer

Br-

Answer

F-

Answer

Cl-

Question 51

What is the enthalpy change for the following reaction: CH4(g) + 2O2(g) -> CO2(g) + 2H2O(g)?

Accepted Answer

Negative

Answer

Zero

Answer

Cannot be determined

Answer

Positive

Question 52

Which of the following is a characteristic of metallic bonding?

Accepted Answer

High electrical conductivity

Answer

Solubility in water

Answer

Brittleness

Answer

Low melting point