Free Chemical Bonding MCQs with Answers
964 Chemical Bonding MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.
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Read the Chemical Bonding notesFree MDCAT chapter notes with key terms964 questions · page 7 of 49
- A. Angular and non - zero
- B. Angular and zero
- C. Linear and zero
- D. Linear and non - zero
Explanation: H2S has a bent geometry according to VSEPR. It has 2 lone pairs and 2 bond pairs and a bond angle of 92o degrees.
Correct answer: Angular and non - zero- A. I
- B. Br
- C. Cl
- D. F
Explanation: Elements from the halogen group including F, Cl, Br have pretty high electronegativities.
Correct answer: F- A. Sp3 hybrid orbital
- B. Sp2 hybrid orbital
- C. Sp hybrid orbital
- D. dsp2 hybrid orbital
Explanation: Expressions shown in the options e.g. sp2 basically mean that an s orbital is merged with 2 p orbitals.
Correct answer: Sp hybrid orbital- A. Na
- B. Mg
- C. Al
- D. K
Explanation: Moving from left to right in a period increases the ionization energy. However, the ionization energy of Mg is greater than the ionization…
Correct answer: Mg- A. Energy of affinity
- B. Bond energy
- C. Crystal energy
- D. Potential energy
Explanation: The lattice energy is the amount of energy evolved when gaseous ions of opposite charges are brought together to form an ionic crystal…
Correct answer: Crystal energy- A. Ionic bond
- B. Covalent bond
- C. Coordinate covalent bond
- D. All of the above
Explanation: G.N Lewis proposed that a chemical bond is a pair of electrons shared by two atoms, which is the modern definition of Covalent bond.
Correct answer: Covalent bond- A. Lone pair Bond -pair repulsion > lone pair lone pair repulsion> Bond pair Bond pair repulsion
- B. Bond pair -Bond pair repulsion> lone pair lone pair repulsion> lone pair Bond pair repulsion
- C. Lone pair lone pair repulsion> Bond pair Bond pair repulsion> lone pair Bond pair repulsion
- D. Lone pair lone pair repulsion> lone pair Bond pair repulsion> Bond pair Bond pair repulsion
Explanation: It is true because in lone pairs the electrons are not involved in bonding and are free hence the repulsion is greater.
Correct answer: Lone pair lone pair repulsion> lone pair Bond pair repulsion> Bond pair Bond pair repulsion- A. F , O, N , C
- B. N, F , O, C
- C. C, F, N, O
- D. C, F, O, N
Explanation: When we move across a period, the electronegativity increases. Thus , Fluorine has highest electronegativity, then comes Oxygen , then…
Correct answer: F , O, N , C- A. HCOOH
- B. (CH3)3COH
- C. NH2CONH2
- D. (CH3)3C - CHO
Explanation: This molecule contains one carbon atom that forms four single covalent bonds using its sp³ hybrid orbitals.
Correct answer: (CH3)3COH- A. A
- B. B
- C. C
- D. D
Explanation: The smaller the atom the closer the orbital electrons are to the nucleus, making the forces and thus the bond energy highest.
Correct answer: D- A. sp, sp², sp³
- B. sp, sp, sp³
- C. sp², sp, sp³
- D. sp², sp³, sp
Explanation: NH4+ has four H atoms bound to a nitrogen atom hence it can be said to be sp3 hybridized.
Correct answer: sp, sp², sp³- A. BF3 > NF3>NH3
- B. NF3 > BF3> NH3
- C. NH3 > NF3 > BF3
- D. NH3 >BF3 > NF3
- E. NH3 = BF3 = NF3
Explanation: The dipole moment of a molecule depends on the polarity and the arrangement of the bonds and atoms.
Correct answer: NH3 > NF3 > BF3- A. H2O is more polar than HF
- B. H2O can form more hydrogen bonds
- C. H2O has higher molecular weight
- D. H2O has more atoms
- E. H2O does not have a higher boiling point than HF
Explanation: Hydrogen bonds are stronger than other intermolecular forces, and water can form up to four hydrogen bonds per molecule, whereas HF can…
Correct answer: H2O can form more hydrogen bonds- A. 242 kJ mol-1
- B. 820 kJ mol-1
- C. 498 kJ mol-1
- D. 347 kJ mol-1
- E. 946 kJ mol-1
Explanation: The bond energy of N2 Bond is 946 kJ mol-1. This is just a factual recall.
Correct answer: 946 kJ mol-1- A. lack of horizontal intermolecular forces
- B. greater rate of evaporation at the surface than from the interior
- C. reduced rate of intermolecular collisions at the surface
- D. greater fluidity
Explanation: The surface tension in the liquid is caused by intermolecular forces at the surface of the molecule that tend to keep the surface…
Correct answer: reduced rate of intermolecular collisions at the surface- A. Ammonia
- B. Ammonium hydroxide
- C. Hydrochloric acid
- D. Water
- E. Methane
Explanation: There are 3 covalent , 1 coordinate covalent bond in NH4+ ion, and 1 covalent bond in OH−.
Correct answer: Ammonium hydroxide- A. SF4
- B. XeF4
- C. NF3
- D. SiF4
Explanation: In XeF4, there are two lone pairings. Ans. The electron geometry of Xenon is octahedral, but the molecular geometry is square planar.
Correct answer: XeF4- A. Isolated or free silicon
- B. Sulphides
- C. Silica or silicates
- D. Only silicates
Explanation: Si occurs chiefly as the oxide (silica, SiO2) and as silicates (e.g. quartz).
Correct answer: Silica or silicates- A. HCI
- B. H2O
- C. CCl4
- D. CH3Cl
Explanation: CCl4 has polar bond even but dipole moment is zero because the shape of the molecule (tetrachloromethane) is tetrahedral and this makes it…
Correct answer: CCl4- A. Translation and vibrational
- B. Rotational
- C. All the above
- D. None the above
Explanation: Triatomic and higher molecules have translational, vibrational and rotational motions.
Correct answer: All the above