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 32 of 49
- A. Al³⁺
- B. F⁻
- C. Na⁺
- D. Mg²⁺
Explanation: This ion has a 3+ charge, meaning it has lost three electrons. This results in a strong attraction between the nucleus and the remaining…
Correct answer: Al³⁺- A. Electronegativity
- B. Effective nuclear charge
- C. Shielding effect
- D. Electron affinity
Explanation: The atomic radius of a sodium atom is 186 pm, while the ionic radius of a sodium ion (Na+) is 95 pm.
Correct answer: Effective nuclear charge623. H2O has geometry:
- A. Regular tetrahedron
- B. Linear
- C. Distorted tetrahedral
- D. Pyramidal
Explanation: H₂O has a bent or V-shaped geometry, more specifically, it's often described as distorted tetrahedral due to the two lone pairs on…
Correct answer: Distorted tetrahedral- A. Higher will be its reactivity.
- B. Lower will be its stability
- C. Higher will be its stability.
- D. Higher will be its density.
Explanation: Resonance energy is the energy released when a molecule adopts a resonating structure, which is a delocalized arrangement of electrons.
Correct answer: Higher will be its stability.- A. AlCl₃ and CH₄
- B. BF₃ and NH₃
- C. SnCl₂ and BeCl₂
- D. SO₃ and BF₃
Explanation: SO₃ and BF₃ - Correct. Both have a trigonal planar structure due to sp² hybridization.
Correct answer: SO₃ and BF₃- A. Na⁺
- B. Mg²⁺
- C. Al³⁺
- D. Mg⁺
Explanation: Al³⁺ - Correct. Due to its higher charge (+3), Al³⁺ has the strongest attraction to electrons, making its ionic radius the smallest.
Correct answer: Al³⁺- A. Cyclopropane
- B. Diamond
- C. Graphite
- D. Hexane
Explanation: Graphite has sp²-hybridized carbon atoms, forming planar hexagonal layers.
Correct answer: Graphite- A. Methanal
- B. Methanol
- C. Ethanol
- D. 2-Propanol
Explanation: Methanal (formaldehyde) has a C=O bond, meaning the carbon is sp² hybridized.
Correct answer: Methanal- A. Angular
- B. Linear
- C. Triatomic
- D. Pyramidal
- E. CO is polar
Explanation: The correct answer is option (B): Linear. The dipole moment of a molecule depends on the polarity of its bonds and the molecular geometry.
Correct answer: Linear- A. Trigonal
- B. Regular tetrahedron
- C. Regular octahedron
- D. Regular pyramidal
Explanation: In AB4-type molecules, the central atom (A) is bonded to four identical atoms (B) with no lone pairs of electrons on the central atom.
Correct answer: Regular tetrahedron- A. [Fe(CO)5)
- B. [Cu(CN)4)-2
- C. [Au(Cl)4]-
- D. [Pt(NH3)4]+2
Explanation: [Cu(CN)4]-2 has a tetrahedral geometry. The four cyanide (CN-) ligands are arranged symmetrically around the central copper (Cu) ion…
Correct answer: [Cu(CN)4)-2- A. BeCl2
- B. BF3
- C. H2O
- D. NH3
Explanation: Hybridization is the process in which atomic orbitals of the same atoms with slightly different energies intermix to form hybrid orbitals.
Correct answer: BeCl2- A. O
- B. C
- C. N
- D. Be
Explanation: Ionisation energy is the quantity of energy needed to remove an electron from an atom.
Correct answer: N- A. The strong polar bond between H&F
- B. Smaller size of Fluorine
- C. Strong hydrogen bonding
- D. More electronegativity of flourine
Explanation: Acidic strength is a measure of to what extent the acid releases its proton.
Correct answer: Strong hydrogen bonding- A. Cationic radii
- B. Atomic radii
- C. Covalent radii
- D. Anionic radii
Explanation: Cationic radii: Is smaller than the actual atom because of the loss of 1 electron from the parent atom Atomic radii: The actual radii of…
Correct answer: Anionic radii- A. Trigonal bi pyramidal
- B. Trigonal pyramidal
- C. Trigonal plannar
- D. Square plannar
Explanation: The ammonia molecule has a trigonal pyramidal shape with three hydrogen atoms and an unshared pair of electrons attached to the nitrogen…
Correct answer: Trigonal pyramidal- A. H2O
- B. HF
- C. CH4
- D. NH3
Explanation: Methane do not have hydrogen bonds but all others contain hydrogen bonds of different level of strength.
Correct answer: CH4- A. Electron in the 3P1 of Al
- B. Al is less metallic than Mg
- C. Mg comes first than Al
- D. lonization energy from Mg to Al decreases
Explanation: The outer electron in magnesium is in an s sub-shell. However, the outer electron in aluminum is in a p sub-shell, so it is higher in…
Correct answer: Electron in the 3P1 of Al- A. K
- B. Ca
- C. Cl
- D. Bi
Explanation: The second ionization energy is the removal of the second electron from the outermost of the atom. Diagram:
Correct answer: K- A. Larger bond length
- B. Cubic structure of ice
- C. Weak intermolecular forces
- D. Empty spaces in the structure of ice
Explanation: Ice floats on water because it has a lower density than water. As water freezes, the hydrogen bonds cause the structure to arrange in a…
Correct answer: Empty spaces in the structure of ice