Metalloids of the Periodic Table

The metalloids have properties between metals and nonmetals, and many of them are semiconductors. There are 6 elements of this category in the periodic table, from Boron (B), atomic number 5, to Tellurium (Te), atomic number 52.

Metalloids at a glance

Number of elements: 6
Phase under standard conditions: Solid 6 elements

Element list

Atomic no.	Symbol	Name	Atomic mass	Phase	Short configuration
5	B	Boron	10.81	Solid	[He] 2s² 2p¹
14	Si	Silicon	28.085	Solid	[Ne] 3s² 3p²
32	Ge	Germanium	72.63	Solid	[Ar] 3d¹⁰ 4s² 4p²
33	As	Arsenic	74.922	Solid	[Ar] 3d¹⁰ 4s² 4p³
51	Sb	Antimony	121.76	Solid	[Kr] 4d¹⁰ 5s² 5p³
52	Te	Tellurium	127.6	Solid	[Kr] 4d¹⁰ 5s² 5p⁴

Frequently asked questions

Which elements are the metalloids?

The metalloids are Boron, Silicon, Germanium, Arsenic, Antimony and Tellurium.

How many elements are in the metalloids category?

The periodic table has 6 elements in the metalloids category.