Non-metallic elements exist, at room temperature, in two of the three states of matter : gases (such as oxygen) and solids (such as carbon). Non-metallic elements are very brittle, and cannot be rolled into wires or pounded into sheets.

See all questions in Metals and Nonmetals Impact of this question. Solid Non-metals are not easily able to conduct electricity or heat and do not reflect light. What are the 17 nonmetals on the periodic table Chemistry The Periodic Table Metals and Nonmetals. Most nonmetals have biological, technological or domestic roles or uses. Five nonmetallic elements, hydrogen, carbon, nitrogen, oxygen and silicon, largely make up the Earths crust, atmosphere, oceans and biosphere. The 7 elements classified as 'Non-metals' are located in Groups 14,15 and 16 of the Periodic Table. Two nonmetals, hydrogen and helium, make up about 99 of ordinary matter in the observable universe by mass. The elements contained in the classification of Non-metals list are as follows: So, on considering Astatine as a nonmetal, there is a total of 18 nonmetals on the Periodic table.

All these nonmetals are located on the upper right corner of the Periodic table (Hydrogen is located in the left top corner).

Non-metals List - Chemical Elements in the Periodic Table How many nonmetals are there on the Periodic table There are 18 nonmetals on the Periodic table. The elements classed as solid Non-metals therefore have some of the following properties in common: They are usually dull and therefore show no metallic luster and they do not reflect light. They are poor conductors of heat and electricity, they are brittle solids, not ductile in their solid state - they cannot be rolled into wires or pounded into sheets. What are Non-metals? Common Properties of Solid Non-metalsĮlements described as the solid Non-metals have low melting points compared to the metals.

Non metals periodic table