There are seven main non-metals: Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium, Polonium. The metalloids are located on the 'staircase' between the metallic elements and the gases. Other elements can be classified as non-metal, since the term is very broad. These can included Oxygen, Carbon, the Halogens, the Noble Gases, Hydrogen, etc.
there are 18 there are 18 nonmetals
Nonmetals are gases but also solids.
Many nonmetals are gases.
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Brittleness is a property that is characteristic of many nonmetals and few metals. Metals are typically malleable and ductile, able to be bent and stretched without breaking, whereas nonmetals are often brittle and prone to shattering when subjected to force.
Unlike metals, most nonmetals are gases at room temperature.
there are many charaterisitics of nonmetals, a few of them are they do not conduct electricty. and they are not magnetic. mosts of nonmetals do not conduct heat, som are good insilaters. again as i said before, there are many charaterisitics you can look up a bunch more but i named a few.
It is not true; many metals are very reactive and several nonmetals are nonreactive.
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there are only one solid nonmetal: Bromine
Three: oxygen, sulfur, selenium.
Greater than 3