The nonmetals are located on the upper right side of the periodic table.
Hydrogen
Hydrogen is the first element listed in the periodic table. Even though hydrogen is placed above group 1, it does not belong to the Alkali metal family.It is the most abundant element in the universe and is composed of a single proton and a single electron. Many scientists estimated that 90 percent of the universe is made up hydrogen.[1]
Carbon
Carbon is the sixth element on the periodic table, with an atomic number of six and an atomic mass of 12.0107 amu. In the periodic table of elements, carbon is found in Group 14 and Period 2. [2] Carbon is the sixth most abundant element in the universe and plays a dominant role in the chemistry as the basis of all life on Earth. [3] As a non-metal, carbon is unique in its chemical properties because it forms better substances than the total addition of all the other elements combined with each other.
Nitrogen
Nitrogen was discovered by a person named Daniel Rutherford in the year 1772. [4]
Oxygen
Oxygen is the 8th element of the periodic table; oxygen is located in group 6A, which is a nonmetal group.[5] The atomic number of oxygen is 8, so that means it has 8 protons, thus giving the position of "8" on the periodic table.[6]
Phosphorus
Phosphorus is element 15 on the periodic table. It has two allotropes, red and white phosphorus. White phosphorus was isolated by Hennig Brand while he was attempting to isolate the philosopher's stone from urine.
Sulfur
Selenium
Properties
Non-metals show characteristic properties:
- poor heat and electrical conductivity
- form acidic oxides
- dull low luster and brittle
- low densities
- low melting points
- high electronegativity.
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