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 34 of 49
- A. Carbocation
- B. Carbanion
- C. Oxonium ion
- D. Carbene
Explanation: A carbocation is a positively charged carbon atom that is attached to three other atoms or groups.
Correct answer: Carbocation- A. 2
- B. 3
- C. 4
- D. 5
Explanation: the total number of electron pairs in the valence shell of the central atom (oxygen) in water is:2 bonding pairs (with hydrogen) + 2 lone…
Correct answer: 4- A. B
- B. Be
- C. Mg
- D. Na
Explanation: The correct answers are Be (Beryllium) and Mg (Magnesium) as they both have electronegativity values that are approximately equal to that…
Correct answer: Be- A. Only electrons of atoms get shuffled during chemical reaction
- B. All the sub-atomic particles of an atom take part in chemical reaction
- C. Protons of an atom spearhead chemical reaction
- D. Protons and neutrons of an atom collectively make chemical reactions possible
Explanation: This is correct. Chemical reactions involve the formation and breaking of bonds, which are due to the interaction of electrons.
Correct answer: Only electrons of atoms get shuffled during chemical reaction- A. F > Cl > Br > I
- B. Cl > Br > F > I
- C. Br > F > Cl > I
- D. I > Br > Cl > F
Explanation: F > Cl > Br > I) - Correct: Fluorine has the highest ionization energy due to its small size and strong nuclear attraction.
Correct answer: F > Cl > Br > I- A. IIA
- B. VIIA
- C. VA
- D. VIIIA
Explanation: VIIIA) - Correct: Noble gases (Group VIIIA) have the highest ionization energy due to their full outer shells.
Correct answer: VIIIA- A. NH
- B. H₂O
- C. NH₄Cl
- D. NaCl
Explanation: NH₄Cl) - Correct: It contains covalent bonds (N-H), a coordinate bond (NH₄⁺ formation), and an ionic bond (NH₄⁺ and Cl⁻ interaction).
Correct answer: NH₄Cl- A. Pure 100% covalent bond
- B. Pure 100% ionic bond
- C. Partial covalent bond
- D. Both A and B
Explanation: Both A and B) - Correct: Neither purely covalent nor purely ionic bonds exist in real compounds.
Correct answer: Both A and B- A. NH₄⁺
- B. BF₃
- C. NH₃
- D. HF
Explanation: NH₄⁺) - Correct: The NH₄⁺ ion has a coordinate bond where NH₃ donates a lone pair to H⁺.
Correct answer: NH₄⁺- A. Lithium
- B. Nitrogen
- C. Fluorine
- D. Phosphorus
Explanation: Phosphorus - Correct. Phosphorus (P), being in Period 3, has empty d-orbitals and can accommodate more than eight electrons, allowing it…
Correct answer: Phosphorus- A. Bond length of H₂ is 75.4 pm
- B. Energy released in the formation of H₂ is 436.45 kJ mol⁻¹
- C. When bond length is less than 75.4 pm, energy of molecules decreases
- D. When bond length is less than 75.4 pm, energy of molecules increases
Explanation: When bond length is less than 75.4 pm, energy of molecules decreases - Incorrect.
Correct answer: When bond length is less than 75.4 pm, energy of molecules decreases- A. More than water.
- B. More than than ethylene glycol.
- C. Less than methyl alcohol.
- D. Same as ethyl alcohol.
Explanation: Surface tension depends mainly upon the forces of attraction between the particles within the given liquid and also upon the gas, solid…
Correct answer: Less than methyl alcohol.- A. sp3d
- B. d2sp3
- C. sp3d2
- D. dsp3
Explanation: The complex is 75% ionized, leading to significant dissociation, which implies the presence of multiple ions.
Correct answer: d2sp3- A. 5
- B. 3
- C. 6
- D. zero
Explanation: The correct difference is found by identifying 15 sigma bonds and 9 pi bonds in 1,3,5-tricyanobenzene, resulting in a difference of 6.This…
Correct answer: 6- A. (1)A non polar covalent bond is a type of covalent bond in which the two atoms share electrons unequally(2)In a polar covalent bond, the two atoms have the same electronegativity. The electrons in the bond are therefore shared equally between the two atoms, and there is no partial positive or negative charge on either atom.
- B. (1).Polar covalent bonds are formed between atoms that have the same electronegativity.(2).Non-polar covalent bonds are formed between atoms that have the difference in electronegativity.
- C. (1). A polar covalent bond can have polarity.(2). A non polar covalent bond can have no polarity.
- D. None of these
Explanation: Option C is correct.A polar covalent bond cannot have no polarity. A polar covalent bond is a type of covalent bond in which the electrons…
Correct answer: (1). A polar covalent bond can have polarity.(2). A non polar covalent bond can have no polarity.- A. Atomic number of an element
- B. Valency of an element
- C. Charge on an atom
- D. Atomic mass of an element
Explanation: The ionization energy is the energy required to remove an electron from an atom or ion.
Correct answer: Valency of an element677. If the bond between two atoms is non polar, than the electronegativity difference between them is:
- A. 1.7
- B. Zero
- C. 1.0
- D. 2.0
Explanation: A bond between two atoms is non polar if the electronegativity difference is zero.
Correct answer: Zero- A. 2
- B. 3
- C. 5
- D. 4
Explanation: Methane is a tetrahedral molecule with a central carbon atom bonded to four hydrogen atoms.
Correct answer: 4- A. Electron affinity
- B. Ionization energy
- C. Electronegativity
- D. All of these
Explanation: The metallic character of an element is closely related to its ionization energy.
Correct answer: Ionization energy- A. HF
- B. H2O
- C. HCI
- D. H2
Explanation: In hydrogen gas (H2), the bonding pair of electrons is equally shared between the two hydrogen atoms.
Correct answer: H2