Question

How many resonance structures are there for anthracene?

(A) 6
(B) 5
(C) 4
(D) 3

Answer 1

Hint: In order to give the number of resonance structures present in anthracene, we must first know about anthracene. Anthracene is the aromatic chemical compound with the chemical formula of $$C_{14}{H}_{10}$$. Anthracene will consist of three benzene rings which are fused together.

Complete answer:
Let us first understand about anthracene. Anthracene is an aromatic chemical compound which has a chemical formula of $$C_{14}{H}_{10}$$. Anthracene is made up of three benzene rings that are fused together. It is also known as the green oil or Para naphthalene. Anthracene can be present from the white to yellow solid. It will be having a very weak aromatic odour. Anthracene can be derived from the coal tar. It can be purified by the process of recrystallisation and sublimation. It can be identified in various places such as drinking water, exhaust emission, cigars and ambient air.

Now let us see what a resonance structure is. Resonance structure is the one or more Lewis structure of a polyatomic molecule which can show the delocalisation of the electron in a molecule. Sometimes it is helpful to determine the bonding in the molecule.

Let us see various resonance structures of Anthracene.
Anthracene will undergo delocalisation to give four resonance structures. The resonance structure of Anthracene is given below:

Therefore, the correct answer is option (C) 4.

Note:
Anthracene will be having various uses such as
- It can be used mainly in the production of dyes.
- Used in the organic semiconductor reaction.
- It is used in the scintillation counter crystal.
- Anthracene is converted into anthraquinone.