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. As opposed to metals, non-metallic elements are very brittle, and 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
The nonmetals are generally to:
Hydrogen (H)
In Group 14: Carbon (C)
In Group 15 (the pnictogens): Nitrogen (N), Phosphorus (P)
Several elements in Group 16, the chalcogens: Oxygen (O), Sulfur (S), Selenium (Se)
All elements in Group 17 - the halogens
All elements in Group 18 - the noble gases
There is no rigorous definition for the term "nonmetal" - it covers a general spectrum of behaviour. Common properties considered characteristic of a nonmetal include:
poor conductors of heat and electricity when compared to metals
they form acidic oxides (whereas metals generally form basic oxides)
in solid form, they are dull and brittle, rather than metals which are lustrous, ductile or malleable
usually have lower densities than metals
they have significantly lower melting points and boiling points than metals
non-metals have high electronegativity
Only seventeen elements in the periodic table are generally considered nonmetals, compared to over eighty metals, but nonmetals make up most of the crust, atmosphere and oceans of the earth. Bulk tissues of living organisms are composed almost entirely of nonmetals. Many nonmetals (hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, and iodine) are diatomic, and most of the rest are polyatomic.
2007-03-03 11:49:49
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answer #1
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answered by Pey 7
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It's a gas, honey.
Are gases metal or metalloid?
2007-03-03 11:45:09
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answer #2
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answered by Anonymous
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its a non-metal. get a copy of a periodic table and use different colors to shade in your metals, non-metals and metalloids.
NON-METALS are: H, He, C, N, O, F, Ne, P, S, Cl, Ar, Se, Br, Kr, I, Xe, Rn
METALLOIDS are: B, Si, Ge, As, Sb, Te, At
The rest are your metals. Once you get them shaded, you will see how they are put together on the table and it will be easy to remember. Hope I could help.
2007-03-03 13:37:22
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answer #3
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answered by jane 2
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i know that all metals are made from a mineral not sure about metalloid and hydrogen is a gas
2007-03-03 11:47:03
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answer #4
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answered by c c 2
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Even though hydrogen is on the metal side, it is a gas with metal-like properties.
2007-03-03 16:04:28
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answer #5
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answered by spacelearner1 2
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uhh..it's a gas.
and you figure it out by using the PERIODIC TABLE.
the left side are metals.
then there is the ladder thing that separates the non'metals from the metals. beneath the ladder there are your metalloids.
2007-03-03 11:46:57
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answer #6
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answered by shimoz 3
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No. You can find out by going to wikipedia.org and putting in the name of metalloid, or whatever you are looking for and it gives your a thorough description.
2007-03-03 11:46:59
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answer #7
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answered by Anonymous
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metal
2016-02-07 02:59:32
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answer #8
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answered by Ramya 1
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It's a noble gas & Thus a non-metal
2007-03-03 14:50:23
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answer #9
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answered by Mike J 5
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Hydrogen is a gas.
2007-03-03 18:13:29
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answer #10
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answered by Anonymous
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