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 26 of 49
- A. CH4
- B. KCN
- C. H2
- D. KCI
Explanation: Option B is correct.The compound that contains both ionic and covalent bonds is KCN.
Correct answer: KCN- A. The first I.E. of Al is less than the first I.E. of Mg
- B. The second I.E. of Mg is greater than the second I.E. of Na
- C. The first I.E. of Na is less than the first I.E. of Mg
- D. The third I.E of Mg is greater than the third I.E. of Al
Explanation: Option B Is correct.That is not correct. The second ionization energy (IE) of sodium is greater than the second IE of magnesium.The first…
Correct answer: The second I.E. of Mg is greater than the second I.E. of Na- A. High, low
- B. Low, low
- C. Low, high
- D. High, high
Explanation: Option C is correct.The transfer of an electron from an atom with a low ionization energy (IE) to an atom with a high electron affinity…
Correct answer: Low, high- A. Gases
- B. Solids
- C. Plasma
- D. Liquids
Explanation: Option A is correct.The intermolecular distance is higher in gases. Intermolecular distance is the space between two molecules.
Correct answer: Gases- A. Inter-titian distance R
- B. Inter ionic distance R
- C. Inter-cationic distance R+
- D. Inter-anionic distance R-
Explanation: Option B is correct.The sum of cationic and anionic radius in a crystal lattice is equal to the interionic distance.
Correct answer: Inter ionic distance R- A. Acceptor
- B. Donor
- C. Neutral
- D. Negatively charged
Explanation: Option B is correct.A donor species is a substance that can donate electrons to another substance.
Correct answer: Donor- A. Transition elements
- B. Non-transition elements
- C. Only alkali metals
- D. Alkaline earth metals
Explanation: B is correct . It does explains the shapes of molecules for non-transition elements.
Correct answer: Non-transition elements508. The increase in atomic radii in_is due to increase in the number of shells and the screening effect:
- A. Groups
- B. Periods
- C. Both A & B
- D. None of these
Explanation: Down the group, number of shells between nucleus and outermost electrons increase and the attraction of nucleus towards outermost…
Correct answer: Groups- A. 1450.7 KJmol-1
- B. 145 KJmol-1
- C. 155 KJmol-1
- D. 738 KJmol-1
Explanation: A is correct.The second ionization energy value of magnesium ion after the removal of second electron is approximately 1450.7 KJmol-1 .
Correct answer: 1450.7 KJmol-1- A. sp3-s
- B. sp2-s2
- C. sp3-s2
- D. sp3-sp3
Explanation: The carbon in methane is sp3 hybridized whereas hydrogen only has s orbital.
Correct answer: sp3-s- A. Ionization energy
- B. Electron affinity
- C. Atomic radius
- D. Electronegativity
Explanation: Ionization energies help classify substances as metals , non metals and metalloids.
Correct answer: Ionization energy- A. Released
- B. Absorbed
- C. Remain same
- D. Constant
Explanation: It is correct. When oppositely charged ions are brought closer , ionic bonds form and bond forming releases energy.
Correct answer: Released- A. Metallic
- B. Ionic
- C. Covalent
- D. Polar covalent
Explanation: Formula mass is considered for ionic compounds instead of their molecular mass.
Correct answer: Ionic- A. Neon
- B. Argon
- C. Helium
- D. Krypton
Explanation: B is correct .Sulfur gains two electrons to have a stable configuration of 18e just like Argon.
Correct answer: Argon- A. Atomic radius of atoms
- B. Nature of orbital
- C. Shielding effect of inner electrons
- D. All of these
Explanation: D is correct.Ionization energy depends on the shielding effect, nature of orbitals and the atomic radius.
Correct answer: All of these- A. Lanthanides
- B. Actinides
- C. Alkali metal
- D. Noble gases
Explanation: Elements with the electronic configuration of valence shell ns²np⁶ are known as noble gases.
Correct answer: Noble gases- A. Annular
- B. Ring
- C. Angular
- D. Linear
Explanation: In SO2, sulfur is bonded to two oxygen atoms, and it also has one lone pair of electrons.
Correct answer: Angular- A. Intermolecular force
- B. Chemical bond
- C. London force
- D. Polar force
Explanation: The force that holds atoms within a molecule together is called a chemical bond.
Correct answer: Chemical bond- A. Magnesium chloride
- B. Solid neon
- C. Hydrogen sulphide
- D. Caesium fluoride
Explanation: A directional bond, like the hydrogen sulfide (H2S) molecule, occurs when the electron pairs involved in the bond are localized in…
Correct answer: Hydrogen sulphide- A. An electron
- B. Pair of electron
- C. 3 electron
- D. 4 electron
Explanation: BF3 (boron trifluoride) is an electron pair acceptor because boron has an incomplete octet in its valence shell.
Correct answer: Pair of electron