Question

(I) what is isomerism?
(II) what is catenation?

Answer 1

Answer:

What is Isomerism?

Isomerism is the phenomenon in which more than one compounds have the same chemical formula but different chemical structures. Chemical compounds that have identical chemical formulae but differ in properties and the arrangement of atoms in the molecule are called isomers. Therefore, the compounds that exhibit isomerism are known as isomers.

what is catenation

Catenation Definition: Catenation is the binding of an element to itself through covalent bonds to form chain or ring molecules.

Examples: Carbon is the most common element that exhibits catenation. It can form long hydrocarbon chains and rings like benzene

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Answer 2

Isomerism - The property of an element to have the same molecular formula but found in different structures or performing different functions.

For example, butane can have the following structures.

H H H H

I I I I

H-C-C-C-C-H

I I I I

H H H H

and

CH3-CH-CH3

I

CH3

Catenation - The property of self-linking of atoms (namely C-atoms) to form straight and branched chains and rings of large molecules.

For example, carbon can form large carbon chains as seen in Diamond or compounds like C60.