What color is the element indium?
823616
Indium is a silvery grayish color.
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Color Compound \nRed- strontium salts, lithium salts \nlithium carbonate, Li2CO3 = red \nstrontium carbonate, SrCO3 = bright red  \nOrange- calcium salts \ncalcium chloride, CaCl2 \ncalcium sulfate, CaSO4·xH2O, where x = 0,2,3,5 \nGold- incandescence of iron (with carbon), charcoal, or lampblack \nYellow- sodium compounds \nsodium nitrate, NaNO3 \ncryolite, Na3AlF6 \nElectric White- white-hot metal, such as magnesium or aluminum \nbarium oxide, BaO \nGreen- barium compounds + chlorine producer \nbarium chloride, BaCl+ = bright green \nBlue- copper compounds + chlorine producer \ncopper acetoarsenite (Paris Green), Cu3As2O3Cu(C2H3O2)2 = blue \ncopper (I) chloride, CuCl = turquoise blue \nPurple- mixture of strontium (red) and copper (blue) compounds \nSilver- burning aluminum, titanium, or magnesium powder or flakes
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Crystal Violet \nIodine Solution  \nEthanol\nSafranin \nWater \n\nGram -ve = pink\nGram +ve = purple
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Tungsten mostly, but there are other metals used. There are also gasses that glow too in bulbs that have no filiment wire.
884509
http://www.galleries.com/minerals/elements/silicon/silicon.jpg\n\nits grey and shiny...not too exciting.
944951
Flame tests show the color of the metal (the positive ion). The negative ion is usually nitrate (NO3) or sulfate (SO4) which are colorless.
791078
I suppose the answer is ultaviolet but as it is outside the visual spectrum of elctromagnetic radiation I can't see how you could define it as a coloUr.
207493
Copper (II) nitrate, Cu(NO3)2, is dark blue.\nBarium nitrate, Ba(NO3)2, is white.\nIron (III) nitrate, Fe(NO3)3, is purple-greenish.\nLead (II) nitrate, Pb(NO3)2, is clear or white.\n\nNot sure what the orange is, but it's not one of those.
176836
Hello,\nPottasium = lilac flame.\nCalcium = Brick red flame, not green flame.\nSulphur = Bright blue flame\nHydrogen = Pale blue flame (Hydrogen isnt a metal though)\nSodium = Golden flame.\nPhosphorus = White fumes.\nMagnesium = dazzling white light.\nOk, thats all that strikes my mind now...
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Iridium (IPA: /ɪˈɹɪdiəm/) is a chemical element in the periodic table that has the symbol Ir and atomic number 77. A dense, very hard, brittle, silvery-white transition metal of the platinum family, iridium is used in high strength alloys that can withstand high temperatures and occurs in natural alloys with platinum or osmium. Iridium is notable for being the most corrosion resistant element known and for its significance in the determination of the probable cause of the demise, by a meteorite strike, of the dinosaurs. It is used in high temperature apparatus, electrical contacts, and as a hardening agent for platinum.
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If you have the letter names, use the Periodic Table of Elements.  If not, use PH paper, and that might help.  Go by color, soluability, and texture.
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Yellow\nGreen\nYellow\nYellow\nYellow\nGreen\nGreen\nGreen
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Gold\n\nCheck out the cool interactive periodic table in the links below.
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RED: Strontium compounds; YELLOW: Sodium compounds; GREEN: Barium compounds; BLUE: Copper compounds plus a chlorine producer; PURPLE: a mixture of strontium and copper compounds; GOLD: charcoal or lampblack; SILVER: burning titanium, aluminum or magnesium powder or flakes.
38437
Well man,\n   A cute question. One question to you too. What is colour? well it is the reflected light of a specific wavelength. So the coulor that your atom would reflect will give the atom its colour. Simple yet beautiful
78095
Color requires large orbitals to absorb light.  Metal elements are larger than most common non-metal elements, and hence they are more likely to have color than, say, common organic molecules.  However, organic molecules can have conjugated orbitals, which become larger than a single atome and hence are abale to give a coloration in the visible range of the spectrum (as is seen in chlorophyll and carteinoids which color vegetables).  So metal atoms do generally give color, but large molecules with smaller atoms can also make color if the orbitals are conjugated.
560835
with travelling electrons.depending on their wavelength,colours are formed