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 48 of 49
- A. 109.5
- B. 120
- C. 90
- D. 107.5
Explanation: Ethane, C2H6, has a geometry related to that of methane. The two carbons are bonded together, and each is bonded to three hydrogens.
Correct answer: 109.5- A. BF3
- B. H2O
- C. BeCl2
- D. NH3
Explanation: The correct answer is BeCl2. In BeCl2, beryllium undergoes sp hybridization, resulting in two sp hybrid orbitals that overlap with the p…
Correct answer: BeCl2- A. Sp3, 109.5*
- B. Sp3, 60*
- C. Sp2, 120*
- D. Sp2, 107*
Explanation: Cyclopropane has carbons with four bonds, hence they are SP3, but with bond distances less than normal alkanes and C-C-C bond angles of 60…
Correct answer: Sp3, 60*- A. Sp2
- B. Sp
- C. Sp and Sp2
- D. Sp. Sp2. Sp3
Explanation: The first carbon atom has an sp hybridization, as it is involved in a triple bond with another carbon atom.The second and third carbon…
Correct answer: Sp. Sp2. Sp3- A. Weak
- B. Strong
- C. Less energetic
- D. More stable
Explanation: According to the quantum mechanical approach, a covalent bond is formed when half-filled orbitals in the outer or valence shells of two…
Correct answer: Weak- A. Trigonal planar
- B. Octahedral
- C. Square planar
- D. Tetrahedral
Explanation: The geometry of methyl chloride (CH3Cl) is tetrahedral. In CH3Cl, the central carbon atom (C) is bonded to four other atoms: three…
Correct answer: Tetrahedral- A. Covalent
- B. Electrovalent
- C. Hydrogen bond
- D. Coordinate covalent bond
Explanation: Coordinate covalent bond: A coordinate covalent bond is formed when one atom donates a pair of electrons to be shared with another atom.
Correct answer: Coordinate covalent bond- A. Ionic
- B. Covalent
- C. Coordinate covalent
- D. None of the above
Explanation: Covalent bonds involve the sharing of electrons between atoms. Boron typically forms covalent bonds by sharing electrons with hydrogen.
Correct answer: Covalent- A. one sigma bond, two pi bonds
- B. one sigma bond, four pi bonds
- C. two sigma bonds, four pi bonds
- D. three sigma bonds, two pi bonds
Explanation: Hence ethyne has one sigma bond formed by carbon carbon over lapping and the other two sigma bonds are formed by carbon hydrogen…
Correct answer: three sigma bonds, two pi bonds- A. He2+
- B. H2-
- C. H2+
- D. H2-2
Explanation: MOLECULAR ORBITAL THEORY: It states that all the atoms tend to combine together and form molecular orbitals.
Correct answer: H2-2- A. sp2 - sp
- B. sp2 - sp2
- C. sp3 - sp2
- D. sp - sp
Explanation: The correct answer is sp2 - sp2. In aldehydes and ketones, the carbonyl carbon atom is sp2 hybridized.
Correct answer: sp2 - sp2- A. 6
- B. 9
- C. 11
- D. 4
Explanation: The molecule CH2=CH-CH=CH2 consists of four carbon atoms and four hydrogen atoms.
Correct answer: 9- A. CaF2
- B. MgO
- C. KCI
- D. H2
Explanation: Covalent bond is a chemical bond that involves the sharing of electrons,options A, B and C all show ionic bonds, therefore the correct…
Correct answer: H2- A. It would be disproportion
- B. It would be ratio active
- C. It violates the pauli exclusion principle
- D. No H-H bond would form
Explanation: H22+ cannot be formed as it will be a very unstable structure due to the fact that there would be no bond between H-H
Correct answer: No H-H bond would form- A. 1/2
- B. 1
- C. 2
- D. 1.5
Explanation: The bond order of H2+ is 1/2. This means that the molecule has a half-filled bonding orbital.
Correct answer: 1/2- A. CO2 and SO2
- B. BF3 nad NH3
- C. MgCI2 and AICI3
- D. CH4 and SiH4
Explanation: The shape of molecules can be predicted by VSEPR theory. According to this theory the shapes or geometry of a molecule or ion depends on…
Correct answer: CH4 and SiH4- A. NH3
- B. PH3
- C. PCL3
- D. BCL3
Explanation: Electron-deficient compounds are those that have fewer electrons than what would be expected based on the octet rule or the number of…
Correct answer: BCL3- A. Ionic
- B. Covalent
- C. Co-ordinate covalent
- D. All of them
Explanation: An ionic bond forms between the NH4 + and Cl - ions in an NH 4 Cl molecule, as well as three covalent bonds between one atom N and three…
Correct answer: All of them- A. HgCl2
- B. SnCl2
- C. C2H2
- D. NO2
Explanation: NO2: This option is correct. NO2 (nitrogen dioxide) has a linear molecular geometry and is isostructural with CO2.
Correct answer: NO2- A. CH3 NH2
- B. PH3
- C. H2O
- D. CH2(NH2)CH2(NH2)
Explanation: Ethylene diamine is a bidentate ligand as it has two Nitrogens, each containing a lone pair of electrons that they can donate to form two…
Correct answer: CH2(NH2)CH2(NH2)