at room temperature more than half of the non-metal elements are what??
481634
Solid or gaseous, depending on what the question means when refering to non-metals:  There are 11 gases total out of the entire table (6 are nobel gases) and only 2 liquids..mercury and bromine.  The true non-metals comprise only 7 elements, and only 3 of those (hydrogen, nitrogen, and oxygen) are gases.  If you takea  looser definition of non-metals, which includes the true nonmetals plus the halogens and noble gases, the the answer is gaseous.  From the wording of the question, I would think they were trying to get you to say gaseous.
483053
Well to astrophysisists there are three types of element, Hydrogen, Helium and metals (i.e. everything else and yes I know it's confusing that Oxygen is a metal but in astrophysics that's how things work).\n\nNow the confusion aside main sequence stars are mostly hydrogen but are fusing hydrogen into helium and tended to start with quite a bit of helium as well (being that the universe is 25% Helium).\n\nThe concentration of other elements varies from star to star and the concentration of each element also varies so there's not much to say there.
1145844
Well, iron is a metal that doesn't contain carbon. Both are elements i.e. substances that can't be broken down into simpler substances by a chemical reaction. Most of the known elements in the universe are metals eg. aluminium, gold, copper, but the non-metals are more abundant eg. oxygen, hydogen. They are termed metals because of their structure and the way in which they bond to other elements. Maybe by metal you meant metal alloy. Steel is an alloy (mixture) of iron and carbon. I think all alloys of iron have some carbon in them. Don't know if this is what you meant but it was good trying to think about an answer.
714217
The metal which is the furtherest to the right-hand top corner of the periodic table will be the most electronegative. Those who said fluorine didn't read the question properly because you are asked for a metal and fluorine, although the most electronegative 'element', is not a metal. In answering this question, I'm going to assume that the metalloids aren't included and not a subset of the cagetory of metals. The most electronegative metal would be aluminium (13). Have a look at the periodic table, it's the element which is closest to the top-right hand side but is still classified as a metal.
330110
Metalloids. They are "between" metals and non-metals.
194662
the numbers are on some better periodic tables\nthey fall out of valence and periodicity\nbut I must admit there is a lot to it
486351
Cu.\nIt is a transition metal with ions of Cu+ and Cu2+.
916757
Transition metals are stable.  Mercury is a metallic liquid at room temperature.  Diamond and graphite are allotropes of carbon.  H, N, O, F, Cl, Br, I, At form diatomic molecules.  He, Ne,Ar, Kr, Xe, Rn are monoatomic gases at room temp.
563557
Metals have 1 or 2 or 3 electrons in their outer shell. Non metals have 4, 5, 6, 7 or 8 electrons in their outer shell. (Strictly speaking, elements with 4 electrons in their outer shell are semi-metals or metalloids.)
237935
francium. mercury is technicaly not a metal, it just has a low melting point, low metling points do not make it unstable. if that were the case, then oxygen would be VERY unstable ITS ALREADY TURNED INTO VAPOR!!!
310377
It depends on if you are looking at large quanities or just any ammount goes. It also depends on if you are looking at elements that are only found in compounds or not. Oxygen, hydrogen, argon, carbon, nitrogen, alluminium, silicon, iron, tugstan, lithium, potassum, titanium to name a few. almost all of the elements can be found near the earth's surface except those that are man made, usually the extremly heavy ones like plutonium.
665164
Just calcium I think... chlorine, cobolt, copper are not and carbon by itselft should be either...
219766
Iron = Transition Metal\nCobalt = Transition Metal\nSodium = Metal (oddly enough)\nOxygen = Nonmetal (gas)\nHelium = Nonmetal (noble gas)
149051
nitrogen, probably helium and hydrogen too.
714497
Mercury and Bromine are the only liquids in the Periodic table. Francium, cesium, gallium, and rubidium are four elements that melt at temperatures slightly higher than room temperature.
709350
Solid in room temp, but melts in your hand (slightly above room temp)\n\nAlloys quickly with most metals.\n\nYou can read more at the following:
488112
http://chemistry.allinfoabout.com/features/nonmetals.html