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 16 of 49
- A. Second group
- B. Second period
- C. Higher groups
- D. Higher periods
Explanation: The decrease of atomic radii is very prominent in the second period because in all elements in period 2, as the atomic number increases…
Correct answer: Second period- A. Number
- B. Nature
- C. Structure
- D. Both A & B
Explanation: There are different types of hybridization depending upon the number and nature of orbitals taking part in hybridization such as sp, sp2…
Correct answer: Both A & B- A. Na ➔ Na+ + e-
- B. Ca+➔ Ca++ +e-
- C. K+➔ K++ +e-
- D. C2+➔ C3+ + e-
Explanation: In all options except C, the electron being removed is from the outer most (valence) shell and hence the shielding is greatest, hence…
Correct answer: K+➔ K++ +e-- A. Gamma rays
- B. Alpha rays
- C. X-rays
- D. Beta rays
Explanation: Atomic radii are in the range of 10-1000pm. The wavelenght of X rays also lies within this range, thus via resonance, we can measure…
Correct answer: X-rays- A. Single bond
- B. Double bond
- C. Triple bond
- D. Both B & C
Explanation: Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more…
Correct answer: Both B & C- A. An electron
- B. Pair of electrons
- C. 3 electrons
- D. 4 electrons
Explanation: In chemical bonding, an electron pair acceptor is typically referred to as an electron acceptor or Lewis acid.
Correct answer: Pair of electrons- A. Nuclear charge
- B. Number of electrons
- C. Shielding effect
- D. Ionization energy
Explanation: The shielding effect remains the same across a period because the number of shells is the same for each element in the period.
Correct answer: Shielding effect- A. Polar.
- B. Non polar.
- C. May be polar or nonpolar.
- D. Ionic.
Explanation: The bond in a homonuclear diatomic molecule is non-polar due to the electronegativity difference of zero.
Correct answer: Non polar.- A. Small size
- B. Seven electron
- C. Thick electronic cloud
- D. All of these
Explanation: There is greater repulsion among the electrons in the 2p-shell of fluorine than in the 3p-subshell of chlorine.
Correct answer: All of these- A. Four pi bonds are present
- B. Four sp3- p bonds are present
- C. It has a tetrahedral shape
- D. It has a square planar shape
Explanation: XeO4 is a non-polar molecule as the four oxygen atoms are arranged around the Xenon atoms in a tetrahedral fashion, symmetrically opposite…
Correct answer: It has a square planar shape- A. Blocks
- B. Reduces
- C. Increases
- D. Enhances
Explanation: B Is correct as the shielding effect reduces the force of attraction between the electrons and the nucleus.
Correct answer: Reduces- A. 738 J/mol
- B. 738 KJ/mol
- C. 783 J/mol
- D. 783 KJ/mol
Explanation: The ionization energy value for magnesium ion is 738 kJ/mol.
Correct answer: 738 KJ/mol313. The electronegativity difference of the elements can be related to the following property of bonds:
- A. Dipole moment
- B. Bond energies
- C. Both A & B
- D. None of these
Explanation: As the electronegativity difference between two atoms of different elements in a bond increases, the bonding pair of electrons is…
Correct answer: Both A & B314. The outermost s and p orbitals of noble gases are completely filled, that is why the gases are _.
- A. Stable, reactive
- B. Stable, unreactive
- C. Unstable, reactive
- D. Unstable, unreactive
Explanation: Since in noble gases, which refers to the zero group of the periodic table, all the shells are filled, as the orbitals have complete…
Correct answer: Stable, unreactive- A. Associative
- B. Multiplicative
- C. Additive
- D. All of these
Explanation: Reason: The distance between the ions of any crystal is the sum of the individual ionic radii. Another word for this is additive.
Correct answer: Additive- A. Water
- B. HCl
- C. Noble gases
- D. Chloroform
Explanation: Reason: Noble gases form bonds with only one singular type of element (themselves). Therefore, they aren't able to have dipoles.
Correct answer: Noble gases- A. Dipole-dipole forces
- B. Debye forces
- C. H-bonding
- D. London dispersion forces
Explanation: Reason: London dispersion forces are those intermolecular forces which are caused due to interactions between particles that cause…
Correct answer: London dispersion forces- A. 436.45 kJ/mol
- B. 444.45 J/mol
- C. 432 kJ/mol
- D. 444.45 kJ/mol
Explanation: •The amount of energy evolved during formation of hydrogen molecule is 436.45kJ/mol.
Correct answer: 436.45 kJ/mol- A. 390 kJ/mol
- B. 490 kJ/mol
- C. 590 kJ/mol
- D. 690 kJ/mol
Explanation: The energy released during formation of crystal lattice of KCL is 690 KJ/mol.Only option D is correct.value needs to be memorised
Correct answer: 690 kJ/mol- A. sp3-s
- B. sp2-s2
- C. sp3-s2
- D. sp3-sp3
Explanation: Reason: Methane molecule is formed by the overlap of sp3 hybrid orbitals of carbon with 1s orbitals of four hydrogen atoms separately to…
Correct answer: sp3-s