Question

Why the property of catenation is suitable for carbon ?
Why not for silicon ?
Or other elements with valency 4

Answer 1

In chemistry, catenation is the bonding of atoms of the same element into a series, called a chain. ...Catenation occurs most readily with carbon, which forms covalent bonds with other carbon atoms to form longer chains and structures. This is the reason for the presence of the vast number of organic compounds in nature.

Answer 2

catenation is ability of an element to form long linkages with same element . and this property is followed by carbon,, carbon has vacant D orbital so it form such linkages and silicon doesn't have such property,, it form a network like structure (suppose with oxygen ) forms Sandy soil.. and hence don't follow catenation

hope it helps you