Question

Name four types of coal with percentage of carbon present in each.

Answer 1

We need to know that the same kind of atom to form a chain of form is known as catenation. The four important properties are required for the catenation of atoms. There are the valency of atom is equal or greater than two, the atom have an ability to bond itself with long chain without required another energy for stability for the chain, the self-bond should be stronger than bond with other atom in nature and the kinetic inertness of catenated compound towards other atoms in the molecules.

Complete answer:
There are four types of coal, we can classify majorly. There are peat, anthracite, bituminous and lignite.
Anthracite is one type of coal. It contains $(92 - 98)\%$. Anthracite is the hardest coal in nature. The important property of anthracite is that it is dense, black and difficult to break.
Bituminous is one type of coal. It contains $(90 - 80)\%$. Bituminous is the cheapest coal in nature. The important property of bituminous is dense, black and easy to break. Bituminous is mainly used for commercial purposes for cooking to standard the heat.
Peat is one type of coal. It contains $(50 - 60)\%$. Peat is a little hard coal in nature. Peat is mainly seen in the interior part of the coal.
Lignite is one type of coal. It contains $(60 - 70)\%$. Lignite is harder than peat coal in nature. The important property of anthracite is that it is dense, brown and a little difficult to break.

Note:
As we know that one of allotrope of carbon is graphite. It is mainly used in pencil. Carbon nanotubes are also one of the carbon allotropes. The carbon nanotubes are mainly used for polymer, catalytic chemistry and nano diode making methods. Graphite and diamond are the main allotrope of the carbon atom. In current science, diamond is used for making hydrogen metal for fuel research. Diamond is one of the allotropes of the carbon atom. The hybridisation of $s{p^3}$. The diamond is the strongest allotrope of carbon. Each carbon atom in diamond is bonded with other four carbon atoms in the molecule. The geometric nature of diamond is tetrahedral. The structure of diamond is also tetrahedral.