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.
Last updated
Read the Chemical Bonding notesFree MDCAT chapter notes with key terms964 questions · page 9 of 49
- A. CI3
- B. CH4
- C. HF
- D. HI
Explanation: The methane molecule has four equal bonds. In hybridization, carbon's 2s and three 2p orbitals combine into four identical orbitals, now…
Correct answer: CH4- A. Nitrogen is poor conductor of heat and electricity.
- B. It only gives acidic oxides
- C. Nitrogen has greatest tendency to attract electrons
- D. The compounds are predominantly covalent
Explanation: Nitrogen only gives acidic oxides. This statement is not correct. Nitrogen can also form neutral and basic oxides.
Correct answer: It only gives acidic oxides- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: By looking at the reaction, it somewhat seems it is a group 2 metal e.g. Mg.
Correct answer: Option D164. Select amongst the following which is not a correct statement for the element it is referring to:
- A. Nitrogen is poor conductor of heat and electricity.
- B. Nitrogen gives acidic oxides
- C. Nitrogen has greatest tendency to attract electrons
- D. The compounds formed by nitrogen are predominantly covalent
Explanation: Nitrogen only gives acidic oxides. This statement is not correct. Nitrogen can also form neutral and basic oxides.
Correct answer: Nitrogen gives acidic oxides- A. A molecule of methane has a greater mass than a molecule of neon.
- B. A molecule of methane has more electrons than a molecule of neon.
- C. Molecules of methane have stronger inter-molecular forces than those of neon.
- D. Molecules of methane from hydrogen bonds,but those of neon do not.
Explanation: Boiling point is only dependent on how strongly the given molecules are bonded, strong bonding leads to high B.P and weak bonding leading…
Correct answer: Molecules of methane have stronger inter-molecular forces than those of neon.- A. H3O+
- B. BF4-
- C. HF2-
- D. NH4+
Explanation: A coordinate bond (also called a dative covalent bond) is a covalent bond (a shared pair of electrons) in which both electrons come from…
Correct answer: HF2-- A. one
- B. two
- C. three
- D. four
Explanation: It i clear from this reaction , two electrons are transfered to oxygen to form CaO.
Correct answer: two- A. Electronegativity
- B. Electropositivity
- C. Ionization potential
- D. Electron affinity
Explanation: The ionization energy of a chemical species (i.e., an atom or molecule) is the energy required to remove electrons from gaseous atoms or…
Correct answer: Ionization potential- A. O - Cl
- B. C - Cl
- C. S - O
- D. C - H
Explanation: Notice the word NOT in question If two atoms have an electronegativity difference of 0.4 or less, they form a non- polar covalent bond.
Correct answer: C - H- A. F > N > O < C
- B. F > N > O > C
- C. F< N < O < C
- D. F > O > N > C
Explanation: The relative tendency of a bonded atom in a molecule to attract the shared electron pair towards itself is called electronegativity.
Correct answer: F > O > N > C- A. Pure p
- B. sp hybrids
- C. sp2 hybrids
- D. sp3 hybrids
Explanation: In order for MX3 molecule to have zero dipole moment, it must have a symmetrical shape which in this case can only be trigonal planar.
Correct answer: sp2 hybrids- A. C-C
- B. C ≡ C
- C. N ≡ N
- D. H-F
Explanation: Strength of bonds increases as the number of electron pairs in the bonds increase.
Correct answer: N ≡ N- A. One sigma and one pi
- B. One sigma and two pi
- C. Three sigma only
- D. Two sigma and one pi
Explanation: There are total three bonds in a nitrogen molecule, the first bond is always a sigma bond while the the rest two bonds are pi bonds
Correct answer: One sigma and two pi- A. The ionization energy of A is high and the electron affinity of B is low.
- B. The ionization energy of A is low and the electron affinity of B is high.
- C. The ionization energy of A and the electron affinity of B is high.
- D. The ionization energy of A and the electron affinity of B is low.
Explanation: The ionization energy is known as the amount of energy required to remove an electron from an isolated atom or molecule, it forms a cation…
Correct answer: The ionization energy of A is low and the electron affinity of B is high.- A. NH3
- B. CHCl3
- C. H2O
- D. BF3
Explanation: Dipole moments occurs when there is a separation of charge. It can occur between two ions in an ionic bond or between atoms in a covalent…
Correct answer: BF3- A. Na+
- B. Al3+
- C. F-
- D. Sr2+
Explanation: Heat of hydration is directly proportional to the charge of the cation and inversely proportional to the size of the cation.
Correct answer: Al3+- A. dative bonds
- B. full bond
- C. partial charges
- D. dotted bonds
Explanation: Hydrogen bonds are represented by dotted lines.
Correct answer: dotted bonds- A. HCI
- B. HBr
- C. HI
- D. HF
Explanation: Criteria of electronegativity also helps us to understand the nature of bond.
Correct answer: HF- A. stable, reactive
- B. stable, unreactive
- C. unstable, reactive
- D. unstable ,uncreative
Explanation: Noble gases are gases which are completely filled valence shell. Since He has only s-orbital, its outermost shell is completely filled and…
Correct answer: stable, unreactive- A. combining atoms share the electron pairs
- B. combining atoms are attracted by each other
- C. the ions of the combining atoms are attracted by electrostatic force of attraction
- D. one atom donates a pair of electrons to another atom
Explanation: A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.
Correct answer: combining atoms share the electron pairs