Question

Where metalloids are placed in the periodic table $?$

Answer 1

First we have to know that the periodic table is a tabular display of the chemical elements. The elements in the table can be broadly divided into metals, nonmetals, and metalloids. Metalloids exhibit intermediate properties between metals and nonmetals, it means they are the elements that have properties of both metals and nonmetals.

Complete answer:
In the periodic table, the elements which are metals are located on the left of the table and the elements which are nonmetals are located on the upper right side of the table. The elements which are metalloids lie on either side of the dividing line between metals and nonmetals. The elements to the lower left of the line display increasing metallic behaviour. Whereas, the elements to the upper right side of the line display increasing non-metallic behaviour. They are present in p-block in the table. The metalloids are Boron ($B$), Silicon ($Si$), Germanium ($Ge$), Arsenic ($As$), Antimony ($Sb$), Tellurium ($Te$), Polonium ($Po$) and Astatine ($At$).

Note:
Metalloids are also known as semimetals. The elements in the periodic table are arranged by atomic number, electron configuration, and recurring chemical properties. The seven rows of the table, called periods or series and the eighteen columns, called groups.