List of Nonmetals

The highlighted elements are the nonmetal elements.

The nonmetal elements occupy the upper right-hand corner of the periodic table. These elements have similar chemical properties that differ from the elements considered metals.

The nonmetal element group is a subset of these elements. The nonmetal element group consists of hydrogen, carbon, nitrogen, oxygen, phosphorus, sulfur and selenium.

Hydrogen acts as a nonmetal at normal temperatures and pressure and is generally accepted to be part of the nonmetal group.

Properties of nonmetals include:

dull, not shiny
poor conductor of heat
poor conductor of electricity
high ionization energies
high electronegativity
not malleable or ductile, usually brittle
lower density (when compared to metals)
lower melting point and boiling points (when compared to metals)
gains electrons in reactions

This is a list of the nonmetal elements in order of increasing atomic number.

NUMBER	SYMBOL	ELEMENT
1	H	Hydrogen
2	He	Helium
6	C	Carbon
7	N	Nitrogen
8	O	Oxygen
9	F	Fluorine
10	Ne	Neon
15	P	Phosphorus
16	S	Sulfur
17	Cl	Chlorine
18	Ar	Argon
34	Se	Selenium
35	Br	Bromine
36	Kr	Krypton
53	I	Iodine
54	Xe	Xenon
85	At	Astatine
86	Rn	Radon
117	Ts	Tennessine
118	Og	Oganesson

11 thoughts on “List of Nonmetals”

Reply ↓

sahil December 29, 2014 at 9:38 am

very usefull stuff

u could also add like in what natural state these exist
like sulphur in S8 ,S6,S7
oxygen in O2

Reply ↓

Daniel Rosenthal February 23, 2015 at 1:25 pm

Most metalloids are semiconductors–they have a small electrical conductivity which
increases as their temperature is raised or impurities are added. The exceptions are
arsenic and antimony. These elements exhibit an extreme form of allotropy; the room
temperature allotropes, although brittle are metallc conductors (specific resistivity:
arsenic 35 micro-ohm-cm; antimony 42 micro-ohm cm–but they have nonmetallic,
nonconducting allotropes at low temperatures. By contrast, Germanium has a
specific resistivity of 60 ohm-cm or 60,000,000 micro-ohm cm; tellurium, 430,000
micro-ohm-cm. Quite a difference. In metals, electrical conductivity decreases
slightly as temperature increases and decreases if it is lowered. Some metals–e.g.
tin and lead–lose ALL of their electrical resistance at low temperatures and become
perfect electrical conductors–a phenomenon known as superconductivity. An
experiment was done a few years ago where an electrical current was started in a
lead ring. Three years later it was still circulating undiminished. Of course this
phenomenon only takes place at very low temperatures–just a few degrees above
absolute zero.