Question

find odd one out : coal,graphite,diamond,gold​

Answer 1

$\huge\fbox\color{red}{Gold}$

Explanation:

Each One Of Them Is An Allotropes Of Carbon Except Gold

Hope it helped

Answer 2

The odd one is found out - gold.

The remaining three are allotropes of carbon.

Coal

• It is an amorphous allotrope of carbon and it has a two-dimensional structure.
• Each carbon atom is bonded to the other three carbon atoms by a covalent bond.
• Thus, a hexagonal ring-like planar structure can be observed in the structure of coal.

Graphite

• It is also an allotrope of carbon in which one carbon atom is joined to three other carbon atoms.
• A hexagonal planar structure can be observed in graphite.
• One non-bonded electron is also present per carbon atom in the structure of graphite.

Diamond

• Diamond is the hardest allotrope of carbon in which one atom of carbon is joined to four other carbon atoms with the help of strong covalent bonds.
• A regular tetrahedral network structure can be observed in diamond. structure.

Gold

It is an element with symbol Au.