Group 14-16: Non metals ( Periodic Table #6)

Non-metals are the elements in groups 14-16 of the periodic table. Non-metals are not able to conduct electricity or heat very well. Non-metallic elements are very brittle, and not malleable(i.e.cannot be rolled into wires or pounded into sheets). The non-metals exist in two of the three states of matter at room temperature: gases (such as oxygen) and solids (such as carbon). The non-metals have no metallic luster, and do not reflect light. They have oxidation numbers of ±4, -3, and -2.

The Non-Metal elements are:

  • Hydrogen
  • Carbon
  • Nitrogen
  • Oxygen
  • Phosphorus
  • Sulfur
  • Selenium 
Although five times more elements are metals than nonmetals, two of the nonmetals—hydrogen and helium—make up over 99 per cent of the observable Universe, and one—oxygen—makes up close to half of the Earth's crust, oceans and atmosphere. Living organisms are also composed almost entirely of nonmetals, and nonmetals form many more compounds than metals

 CREDIT: wikipedia.org
                chemicalelements.com

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