Intramolecular and Intermolecular Bonds MCQ - Practice Questions with Answers

Intramolecular and Intermolecular Bonds

Intramolecular Bonds:
In any given molecule, the atoms interact with each other via intramolecular bonds.

• 1. Covalent Bonds: 
• These are the bonds that hold the atoms together in a molecule. 
• These are the strong bonds that cannot be broken except for by the enzymatic actions. 
• There are two types of covalent bonds:

1.1. Non-Polar Covalent Bonds: 

• These bonds are formed when two atoms share electrons equally such that their electronegativity value is also equal. For example, H2:

1.2. Polar Covalent Bonds: 

• Due to the difference in the electronegative values of the atoms, the sharing of electrons become unequal. 

• The bond formed due to an unequal sharing is called a polar covalent bond. 

• Herein, one atom is partially electronegative and the other partially electropositive. 

• For example,  H2O

2. Ionic Bonds: 

• These bonds are formed between two oppositely charged ions. 
• One is more electronegative such that the electrons are completely transferred from the electropositive atom. 

Intermolecular Bonds:

• The bonds between the atoms of different molecules are called the intermolecular bonds. These are of following types:

1. Hydrogen Bonds: 

• When hydrogen is shared between two electronegative atoms, the hydrogen bond is formed. These are the strongest types of intermolecular bonds.
• The molecule which has the H-atom is called the H-bond donor while the molecule which accepts the H-bonds is called the H-bond acceptor.

2. London-Dispersion Forces:

• The bonds that are formed due to fluctuating electron densities around the molecules are called London-Dispersion forces.