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 17 of 49
- A. Acceptor
- B. Donor
- C. Neutral
- D. Negatively charged
Explanation: Option B is correct as a coordinate covalent bond is formed between a molecule with that donates a lone pair and a molecule that accepts…
Correct answer: Donor- A. Monovalent
- B. Divalent
- C. Trivalent
- D. Tetravalent
Explanation: Option C is correct as any atom, ion or chemical group with 3 electrons in its valence shell is called "trivalent".
Correct answer: Trivalent- A. 3A & 4A
- B. 5A & 6A
- C. 6A & 4A
- D. 3A & 6A
Explanation: Option D is correct as ionization energy generally increases down groups "3A and 6A" however, the trend has two anomalies.
Correct answer: 3A & 6A- A. Number of shells
- B. Number of electrons
- C. Number of unpaired electrons
- D. Number of bonds
Explanation: Option C is correct as elements like carbon require orbitals to be hybridized thus also exciting electrons from ground state to form bonds…
Correct answer: Number of unpaired electrons- A. Removed, Cation
- B. Added, Cation
- C. Added, Anion
- D. Removed, Anion
Explanation: Option C.Amount of energy released (or absorbed in some cases) when an electron is added to a gaseous atom to form a negative ion or anion…
Correct answer: Added, Anion- A. Easy
- B. Difficult
- C. Moderate
- D. None of these
Explanation: b) Difficult: This option correctly states that it is difficult to remove an electron from a positively charged ion compared to a neutral…
Correct answer: Difficult- A. Gains 2 e
- B. Loses 1 e
- C. Loses 2 e
- D. Gains 2e
Explanation: .Option B is correct since, in the case of HF, fluorine is more electronegative than hydrogen, so it gains one electron to complete its…
Correct answer: Loses 1 e- A. Neon
- B. Argon
- C. Helium
- D. Krypton
Explanation: Option B is correct since sulfur-16 after gaining two electrons possesses 18 electrons and attains the stable electronic configuration of…
Correct answer: Argon- A. 1A
- B. 2A
- C. 3A
- D. 4A
Explanation: Option A is correct since group 1A atoms lose their electron easily because they are large and ionization energy decreases down the…
Correct answer: 1A- A. Joule repulsion
- B. Planks repulsion
- C. Van der waals repulsion
- D. J.J.Thomson repulsion
Explanation: Option C is correct since Van der Waals forces include attractive forces arising from interactions between the partial electric charges…
Correct answer: Van der waals repulsion- A. Bohr's.
- B. Pauling.
- C. Berzelius.
- D. Rutherford.
Explanation: Linus Pauling used X-ray crystallography to determine the atomic structure of various molecules and crystals.
Correct answer: Pauling.- A. 2s orbital
- B. 2p orbital
- C. 1s orbital
- D. All of these
Explanation: During the formation of the HF bond, the fluorine atom completes its outermost shell by acquiring a share of electrons from hydrogen.
Correct answer: 2p orbital- A. Metals
- B. Non-metals
- C. Metalloids
- D. Noble gases
Explanation: Elements that have high ionization energy values belong to the group of noble gases.
Correct answer: Noble gases- A. decreases, increases
- B. decreases, remains same
- C. increases, decreases
- D. decreases, decreases
Explanation: The less valence electrons an atom has, the least likely it will gain electrons.
Correct answer: decreases, decreases- A. Homonuclear diatomic molecules
- B. Heteronuclear diatomic molecules
- C. Similar atoms
- D. Dissimilar atoms
Explanation: A non-polar covalent bond is formed between atoms that have similar electronegativity values, meaning they have equal or nearly equal…
Correct answer: Homonuclear diatomic molecules336. The tendency of atoms to attain a maximum of _ electron in the valence shell is called 'octet rule'.
- A. 6
- B. 16
- C. 8
- D. 18
Explanation: Option C is correct since the octet rule refers to the tendency of atoms to prefer to have eight (8) electrons in the valence shell.
Correct answer: 8- A. Transition elements
- B. Non-transition elements
- C. Only alkali metals
- D. Alkaline earth metals
Explanation: Option ''B'' 'NON TRANSITION ELEMENTS' is the right option. In 1957, Nylholm and Gillespie proposed VSEPR theory.
Correct answer: Non-transition elements- A. XeF2
- B. XeOF2
- C. XeO3
- D. All of these
Explanation: There are just a few stable compounds formed by noble gasses like XeF2, XeF4, XeOF2, XeO3 etc.
Correct answer: All of these- A. Increase energy
- B. Decrease energy
- C. Higher energy
- D. None of these
Explanation: According to modern theory of chemical bonding, (VBT,MOT) when atoms come together to form compounds, they attain lower energies then they…
Correct answer: Decrease energy340. Calculations regarding ionic character tells us that there is no bond when ionic character is _.
- A. 72%
- B. 100%
- C. 92%
- D. 9%
Explanation: Criteria of electronegativity helps us to understand the nature of bond.
Correct answer: 100%