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 6 of 49
- A. K > Ca > Ba
- B. Ca > Ba > K
- C. Ba > K > Ca
- D. K > Ba > Ca
Explanation: As we move down the group size increases and the electrons experience less effective nuclear charge.
Correct answer: K > Ca > Ba- A. Bond order three and Isoelectronic
- B. Bond order three and weak field ligands
- C. Bond order two and π acceptors
- D. Isoelectronic and weak field ligands
Explanation: This question can be solved by ruling out the wrong options. First of all, CN, CO and NO do not have the same number of electrons so that…
Correct answer: Bond order three and weak field ligands- A. I<Br< cl<T
- B. I<Cl<F<Br
- C. I<Br<f<cl
- D. F<Cl<Br<I
Explanation: The first Electron affinity depends on how strong the bond is formed between the added electron and the nucleus.
Correct answer: I<Br<f<cl- A. CH4
- B. C2H4
- C. CO2
- D. C2H2
Explanation: Option A, CH4 has sp3 hybridization which enables all four bonds to be of the same length and strength.
Correct answer: CH4- A. Ionization energy of A is high but electron affinity of B is low
- B. The ionization energy of A is low but electron affinity of B is high
- C. Both ionization energy of A and electron affinity of B are high
- D. Both ionization energy of A and electron affinity of B are low
Explanation: An atom with high electron affinity means it will readily accept an electron from another atom.
Correct answer: The ionization energy of A is low but electron affinity of B is high- A. I1 < I2
- B. I1 > I2
- C. I1 = I2
- D. None of the above
Explanation: The magnesium and sodium atoms have roughly the same size. What differs is the effective nuclear charge, which is +1 for Na and +2 for Mg.
Correct answer: I1 < I2- A. Na+
- B. K+
- C. Be2+
- D. Ca+2
Explanation: Hydration energy is the amount of energy released when one mole of ions undergoes hydration.Be2+ ion has small size and high charge.
Correct answer: Be2+- A. Sigma bond
- B. Pi bond
- C. Bonding molecular orbitals only
- D. Bonding and antibonding molecular orbitals
- E. All of these options
Explanation: According to Molecular Orbital Theory (MOT), two atomic orbitals overlap resulting in the formation of molecular orbitals.
Correct answer: Bonding and antibonding molecular orbitals- A. Surface tension
- B. Adhesive forces
- C. Viscosity
- D. Polarity
- E. Latent heat of vaporization
Explanation: A raindrop falling through the atmosphere forms a roughly spherical structure due to the surface tension of water.
Correct answer: Surface tension- A. Transferring the electrons
- B. Head-on overlapping of atomic orbitals
- C. Mutual but unequal sharing of electrons
- D. Parallel overlapping of atomic orbitals
- E. All of these options
Explanation: Sigma bond is formed by head-on overlapping of the two orbitals, as shown below:
Correct answer: Head-on overlapping of atomic orbitals- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: Metallic bonding is a type of chemical bonding that arises from the electrostatic attractive force between conduction electrons (in the…
Correct answer: Option D- A. CCl4
- B. CO2
- C. Cl2
- D. C6H6
- E. All of the above
Explanation: Dipole moments occur when there is a separation of charge. They can occur between two ions in an ionic bond or between atoms in a covalent…
Correct answer: All of the above- A. I only
- B. I and II only
- C. I and IIII only
- D. II only
- E. I, II and III
Explanation: When a bond is formed between two atoms, energy is released. The same amount of energy is absorbed when the bond is broken to form neutral…
Correct answer: I, II and III- A. Ionic
- B. Covalent
- C. Complex
- D. Metallic
- E. Border - line hydride
Explanation: Covalent hydrides are formed when hydrogen reacts with other similar electronegative elements like Si, C,etc.
Correct answer: Covalent- A. Linear
- B. Coplanar
- C. Tetrahedral
- D. Octahedral
- E. Trigonal pyramid
Explanation: Tetrahedral geometry is shown by sp3 hybridised orbitals like methane.in the formation of methanethe four hybrid atomic orbitals of carbon…
Correct answer: Tetrahedral- A. 4 hydrogen bonds
- B. 3 hydrogen bonds
- C. 2 hydrogen bonds
- D. 1 hydrogen bonds
Explanation: Intermolecular hydrogen bonding is responsible for the high boiling point of water (100 °C) compared to the other group 16 hydrides that…
Correct answer: 4 hydrogen bonds- A. Non-metal
- B. Solubility
- C. Small Size
- D. Large size
Explanation: Smaller size is the main cause of high charge density and increasing polarizing effect.
Correct answer: Small Size- A. One sigma and one pi
- B. Two sigma and one pi
- C. Only sigma
- D. One sigma and two pi
Explanation: Both the carbon and the nitrogen are sp hydridized which leaves them both with two p orbitals which overlap to form the two π bond in the…
Correct answer: One sigma and two pi- A. Ionic
- B. Covalent
- C. Electrovalent
- D. Polar
- E. Non - polar
Explanation: If the electronegative difference is >1.7 then its nature is ionic and <1.7 then its nature is covalent and if its equal to 1.7 then…
Correct answer: Covalent- A. CCl4
- B. BCl3
- C. BeCl2
- D. LiCl
- E. HCl
Explanation: Electronegativity increases as we go from left to right in a period. So, the electronegativity difference between elements and chlorine…
Correct answer: BeCl2