Question

Which is the strongest bond among the following?
A. Ionic bond
B. Covalent $\sigma $ - bond
C. Coordinate bond
D. Covalent $\pi $ - bond

Answer 1

Hint: A chemical bond is nothing but the attraction between atoms or ions or molecules that holds the atoms together. If the bond formed is by the attraction between oppositely charged ions called an ionic bond. If the bond formed is by sharing of electrons then it is called covalent bond.

Complete step by step answer:
- There are four different types of bonds
a) Ionic bond, b) Covalent bond, c) Hydrogen bond, d) Coordinate bond.
- Ionic bond is going to be formed by the interaction of s-block elements means metals with non-metals. In ionic bonds transfer of electrons are going to involve from metals to nonmetals. Because nonmetals have high electronegativity when compared to metals. The elements are held together by an electrostatic force of attraction in the ionic bond.
- Covalent bond is going to be formed between nonmetals. Covalent bond is formed by the sharing of electrons between two nonmetals. We can say that the two types of bonds are sigma and pi bond.
- Hydrogen bond is going to form between hydrogen in one molecule with a high electronegative atom in another molecule. It is a weak bond.
- Coordinate bond is going to form between an electron pair donor and an electron pair acceptor. It is also a weak bond.
- Therefore from the above statements a strong bond is formed by transfer of electrons or by sharing of electrons.
- If the elements have a greater difference in the electronegativity value that much stronger bond they form. Means ionic bond is more stable than covalent bond.
So, the correct option is A.

Note: A good example of an ionic compound is sodium chloride (NaCl) , also called table salt. The energy required to break ionic bonds in sodium chloride is higher than the energy required to break a covalent bond between two nonmetals.