In which three sections elements are classified?

All the elements are classified into 3 sections they are:

Metals, Non-metals and semi metals (metalloids).

Metals: A metal is a material that is hard, opaque, shiny, and has good electrical and thermal conductivity. Metals are generally malleable and ductile.

Non-metals: Non-metals have low melting and boiling points, densities, brittle if solid, and are usually poor conductors of heat and electricity.

Metalloids: A metalloid is an element that exhibits some properties of metals and some of non-metals.