Free Chemical Bonding MCQs with Answers

• A. NF3
• B. CCl4
• C. CF4
• D. PCl5

Explanation: The octet rule states that atoms tend to form bonds until they have eight electrons in their valence shell.

• A. increases from left to right in a period
• B. increases from top to bottom in a group
• C. does not change in a period
• D. does not change in a group

Explanation: Ionization energy is the energy required to remove an electron from an atom in the gaseous state.

• A. increase
• B. don't change
• C. decrease
• D. show variable trend

Explanation: The atomic radius of atoms generally increases from top to bottom within a group.

• A. Electronegative.
• B. Electropositive.
• C. Neutral.
• D. Non-metals.

Explanation: An element is considered electropositive if it has a tendency to lose electrons when forming chemical bonds.

• A. NH3
• B. H2O
• C. CH4
• D. BF3

Explanation: Water (H2O) has a bond angle of approximately 104.5 degrees. Like ammonia, water has two lone pairs of electrons on the oxygen atom…

• A. Zero
• B. 1
• C. 2
• D. 3

Explanation: The bond order in an O2 (oxygen) molecule is 2.Bond order is a concept used in molecular orbital theory to describe the stability of a…

• A. 8
• B. 10
• C. 9
• D. 12

Explanation: The phosphonium ion (PH4+) has a total of 8 valence electrons.Phosphorus (P) is in Group 15 (also known as Group V or Group 5A) of the…

• A. 90o105o
• B. 109°,105°
• C. 90°180°
• D. 109°180°

Explanation: The carbon atoms (C) are also sp3 hybridized. The angle between the two adjacent carbon atoms and the oxygen atom is also approximately…

• A. NH3
• B. BF3
• C. PCL
• D. PF3

Explanation: BF3 show trigonal planar geometry. The central B aton has 3 bond pair and zero lone pair of electrons.It undergoes a sp2 hybridization.

• A. BF3
• B. H2O
• C. AlCl3
• D. FeCl3

Explanation: The correct answer is H2O. Water is a Lewis base because it has lone pairs of electrons on the oxygen atom that can be donated to form a…

• A. PCl5
• B. SF6
• C. NH3
• D. HN=NH

Explanation: NH3 has sp3 hybridization. In ammonia, the central nitrogen (N) atom forms three sigma bonds with three hydrogen atoms.

• A. NH3
• B. NCl3
• C. NF3
• D. NBr3

Explanation: NF3 has a bond angle of approximately 107 degrees, similar to that of ammonia (NH3).

• A. CCl4
• B. AsH3
• C. SiCl4
• D. C2H2

Explanation: Arsine (AsH3) is a molecule containing one arsenic (As) atom and three hydrogen (H) atoms.

• A. H2S
• B. SO2
• C. CS2
• D. SnC2

Explanation: CO2 is isoelectronic (having the same number of electrons) and isostructural (having the same molecular geometry) with CS2 (Carbon…

• A. NH4Cl
• B. NaCl
• C. HCl
• D. AlCl3

Explanation: NH4Cl (Ammonium Chloride) is the one that contains all three types of chemical bonds: covalent, ionic, and potential hydrogen bonding.

• A. 0
• B. 1
• C. 3
• D. 4

Explanation: The NH+4 ion (ammonium ion) has no pure covalent bonds. All the bonds within the NH+4 ion are polar covalent bonds.

• A. 5
• B. 10
• C. 4
• D. 8

Explanation: Ethene (C2H4) contains 10 sigma (σ) electrons. In the molecular structure of ethene, each carbon (C) atom is connected to three other…

• A. Triangular pyramidal , 107 degree.
• B. Tetrahedral,104.5 degree.
• C. Trigonal planar, 120 degree.
• D. None of these.

Explanation: Boron trifluoride (BF3) has a trigonal planar molecular geometry with bond angles of 120 degrees.In BF3, the central boron (B) atom is…

• A. SO3 and PCl3
• B. Alcl3,Bcl3
• C. CO2 and SO2
• D. BF3 and SO3

Explanation: BF3 has a trigonal planar molecular geometry. The central boron (B) atom forms three sigma bonds with three fluorine (F) atoms.

• A. Sigma bond
• B. Pi bond
• C. Double bond
• D. Triple bond

Explanation: A sigma bond is a type of covalent bond formed by the head-on overlap of atomic orbitals.