Tag Archives: element group

List of Nonmetals

Nonmetal Elements

The highlighted elements are the nonmetal elements.

The nonmetal elements occupy the upper righthand 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 SYMBOLELEMENT
1HHydrogen
2HeHelium
6CCarbon
7NNitrogen
8OOxygen
9FFluorine
10NeNeon
15PPhosphorus
16SSulfur
17ClChlorine
18ArArgon
34SeSelenium
35BrBromine
36KrKrypton
53IIodine
54XeXenon
85AtAstatine
86RnRadon
117UusUnunseptium
118UuoUnunoctium