The metalloids separate the metals and nonmetals on a periodic table. Elements to the left of the line are considered metals . Elements just to the right of the line exhibit properties of both metals and nonmetals and are termed metalloids. Examples of nonmetals include oxygen , chlorine, and argon. Examples of metalloids include boron, silicon, and arsenic . Examples of metals include iron, tin, sodium, and plutonium.
There are 118 elements in the nature.