Question 1

Which type of bond is formed by the complete transfer of one or more electrons from one atom to another?

Accepted Answer

Ionic bond. An ionic bond is formed when one atom loses electrons to another atom. This usually occurs between a metal and a non-metal with high electronegativity difference. Sodium chloride is a classic example of this type of bonding.

Question 2

What is the bond angle in a molecule of methane (CH4)?

Accepted Answer

109.5 degrees. The bond angle in methane is 109.5 degrees because of its tetrahedral geometry. This shape minimizes the repulsion between the four pairs of bonding electrons. Methane is the simplest alkane found in natural gas.

Question 3

Which of the following molecules contains a triple bond?

Accepted Answer

Nitrogen. A nitrogen molecule contains a triple bond between two nitrogen atoms. Each atom shares three pairs of electrons to achieve a stable octet. This strong triple bond makes nitrogen gas relatively inert in the atmosphere.

Question 4

The weak attractive force between non-polar molecules is known as?

Accepted Answer

London dispersion force. London dispersion forces are the weakest intermolecular forces occurring between all molecules. They arise from temporary dipoles created by the movement of electrons. These forces are the only ones present in noble gases like Helium.

Question 5

Which geometry is associated with a molecule having sp hybridisation?

Accepted Answer

Linear. Molecules with sp hybridisation always exhibit a linear geometry. The bond angle between the atoms in such a configuration is exactly 180 degrees. Beryllium chloride (BeCl2) is a typical example of this linear shape.

Chemical Bonding — Set 1