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 13 of 49
- A. Both bond formation and electron pair sharing.
- B. None of these
- C. Bond formation of atoms
- D. Electron pair sharing
Explanation: The modern theories of chemical bonding include the Valence Bond Theory (VBT) and the Molecular Orbital Theory (MOT).
Correct answer: Both bond formation and electron pair sharing.- A. Anion-anion
- B. Electron-electron
- C. Proton-proton
- D. Cation-cation
Explanation: The greatest repulsions in an atom are in between electrons. Hence, electron-electron repulsions will cause an increase in the size of an…
Correct answer: Electron-electron- A. Number of valence shell electrons
- B. Ability of atom to lose electrons
- C. Shielding effect
- D. Effective nuclear charge on the ion
Explanation: For positively charged ions, an increase in the effective nuclear charge would decrease the cationic radius.
Correct answer: Effective nuclear charge on the ion- A. 160⁰
- B. 100⁰
- C. 120⁰
- D. 180⁰
Explanation: A Be atom in the centre with chlorine on either side of it gives a molecule with AB2 configuration.
Correct answer: 180⁰- A. Ionic bond
- B. Sigma bond
- C. Pi bond
- D. Non-polar bond
Explanation: Pi bonds are weak covalent bonds formed by the sidewise (parallel) overlap of p orbitals.
Correct answer: Pi bond- A. Comprehensive
- B. Vector
- C. Aromatic
- D. Scalar
Explanation: Dipole moment is the product of charge separation. It is a measure of the polarity of a molecule.
Correct answer: Vector- A. Gain electrons
- B. Slowly loose electrons
- C. None of these
- D. Easily loose electrons
Explanation: The energy required to remove an electron from an atom in its gaseous state is called ionization energy.If the ionization energy of an…
Correct answer: Slowly loose electrons- A. By gaining electrons
- B. By loosing electrons
- C. By sharing electrons
- D. All of these
Explanation: Atoms achieve stability by gaining, losing, or sharing electrons. These processes involve interactions between atoms that lead to a more…
Correct answer: All of these- A. D-d transition
- B. Electronic splitting
- C. D-d splitting
- D. S-d transition
Explanation: The splitting of d orbital during bond formation is called d-d splitting whereas the movement of an electron from one d orbital at higher…
Correct answer: D-d splitting- A. Inter-ionic distance
- B. Bond order
- C. Anion cation distance
- D. Bond length of ionic compound
Explanation: The distance between the cation and an anion in a crystal lattice structure is called inter-ionic distance.
Correct answer: Inter-ionic distance- A. Different
- B. Same
- C. Slightly same
- D. Slightly different
Explanation: Hybrid orbitals are formed by the combination of two or more atomic orbitals.
Correct answer: Different- A. Gaining protons
- B. Losing protons
- C. Losing electrons
- D. Gaining electrons
Explanation: A neutral atom gains a positive charge by losing negatively charged particles i.e. electrons.
Correct answer: Losing electrons- A. MgCl₂
- B. SO₂
- C. SnCl₂
- D. NH₃
Explanation: Out of the given options, MgCl2 has an AB2 type molecule shape. It is a linear molecule.SO2 and SnCl2 have two bond pairs and one lone…
Correct answer: MgCl₂- A. Moderate
- B. Variable
- C. Minimum
- D. Maximum
Explanation: A molecule is most stable or least reactive in its lowest energy state.
Correct answer: Minimum- A. Substance with a low boiling point
- B. Poor conductor of electricity
- C. Poor conductor of heat
- D. Substance with a high melting point
Explanation: Metals are good conductors of heat and electricity and have high melting and boiling points.
Correct answer: Substance with a high melting point- A. Melting point 1500°C, molten substance is a poor electrical conductor
- B. Melting point 20°C, molten substance does not conduct electricity
- C. Melting point 150°C, molten substance does not conduct electricity
- D. Melting point 800°C, molten substance readily conducts electricity
Explanation: Ionic compounds have high melting points. They are poor conductors in solid state but very good conductors of electricity in molten state.
Correct answer: Melting point 800°C, molten substance readily conducts electricity- A. CLO3
- B. HCLO4
- C. HBr
- D. HCl
Explanation: Co-ordinate covalent bond is a type of bond in which a lone pair of electrons is donated to an empty orbital which is present in another…
Correct answer: HCLO4- A. NH3, CH4
- B. H2O, C2H2
- C. BiCl2, BF3
- D. BF3, AlH3
Explanation: BF3 and AlH3 are the only pair within the options in which both have trigonal geometry therefore it is the correct answer.
Correct answer: BF3, AlH3- A. HI
- B. HCL
- C. HF
- D. HBr
Explanation: HF has the highest bond energy since fluorine is the most electronegative halogen and would bind strongly with an electropositive…
Correct answer: HF- A. Pairing of electrons
- B. Shifts of atoms
- C. Pairing of atoms
- D. Shift of electrons
Explanation: The HF bond is formed by the pairing of the electrons, resulting in a strong bond that is highly polar.
Correct answer: Pairing of electrons