colour of platinum

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why does platinum has silvery shine whereas platinum black (finely powdered platinum) is black in colour although both have the same constitution of pure platinum?



Due to similar composition, both of them will have electrons in similar kind of energy states. So we can't assume this due to charge transfer. Neither is there any scope of charge transfer.






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    why does platinum has silvery shine whereas platinum black (finely powdered platinum) is black in colour although both have the same constitution of pure platinum?



    Due to similar composition, both of them will have electrons in similar kind of energy states. So we can't assume this due to charge transfer. Neither is there any scope of charge transfer.






    color







    share|improve this question























      up vote
      3
      down vote

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      up vote
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      down vote

      favorite











      why does platinum has silvery shine whereas platinum black (finely powdered platinum) is black in colour although both have the same constitution of pure platinum?



      Due to similar composition, both of them will have electrons in similar kind of energy states. So we can't assume this due to charge transfer. Neither is there any scope of charge transfer.






      color







      share|improve this question













      why does platinum has silvery shine whereas platinum black (finely powdered platinum) is black in colour although both have the same constitution of pure platinum?



      Due to similar composition, both of them will have electrons in similar kind of energy states. So we can't assume this due to charge transfer. Neither is there any scope of charge transfer.






      color




      color






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      asked 2 hours ago









      Lakshay

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          In bulk metals, electrons in the conduction band are shared, creating a "sea" of reflective electrons. A nanoparticle, though, is so small that there is no conduction "band", just discrete levels enforced by the Pauli exclusion principle. Other metals in finely divided form, such as gold or silver, are also are black or darkly colored. Traditional silver emulsion photography relies on white silver compounds turning to black nanoparticles of silver when reduced.



          Nanoparticles exhibit interesting color effects due to plasmons. Finely-divided gold particles produce ruby glass, used in stained glass windows, though thin bulk gold films appear green or blue in transmitted light.






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            In bulk metals, electrons in the conduction band are shared, creating a "sea" of reflective electrons. A nanoparticle, though, is so small that there is no conduction "band", just discrete levels enforced by the Pauli exclusion principle. Other metals in finely divided form, such as gold or silver, are also are black or darkly colored. Traditional silver emulsion photography relies on white silver compounds turning to black nanoparticles of silver when reduced.



            Nanoparticles exhibit interesting color effects due to plasmons. Finely-divided gold particles produce ruby glass, used in stained glass windows, though thin bulk gold films appear green or blue in transmitted light.






            share|improve this answer


























              up vote
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              In bulk metals, electrons in the conduction band are shared, creating a "sea" of reflective electrons. A nanoparticle, though, is so small that there is no conduction "band", just discrete levels enforced by the Pauli exclusion principle. Other metals in finely divided form, such as gold or silver, are also are black or darkly colored. Traditional silver emulsion photography relies on white silver compounds turning to black nanoparticles of silver when reduced.



              Nanoparticles exhibit interesting color effects due to plasmons. Finely-divided gold particles produce ruby glass, used in stained glass windows, though thin bulk gold films appear green or blue in transmitted light.






              share|improve this answer
























                up vote
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                up vote
                3
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                In bulk metals, electrons in the conduction band are shared, creating a "sea" of reflective electrons. A nanoparticle, though, is so small that there is no conduction "band", just discrete levels enforced by the Pauli exclusion principle. Other metals in finely divided form, such as gold or silver, are also are black or darkly colored. Traditional silver emulsion photography relies on white silver compounds turning to black nanoparticles of silver when reduced.



                Nanoparticles exhibit interesting color effects due to plasmons. Finely-divided gold particles produce ruby glass, used in stained glass windows, though thin bulk gold films appear green or blue in transmitted light.






                share|improve this answer














                In bulk metals, electrons in the conduction band are shared, creating a "sea" of reflective electrons. A nanoparticle, though, is so small that there is no conduction "band", just discrete levels enforced by the Pauli exclusion principle. Other metals in finely divided form, such as gold or silver, are also are black or darkly colored. Traditional silver emulsion photography relies on white silver compounds turning to black nanoparticles of silver when reduced.



                Nanoparticles exhibit interesting color effects due to plasmons. Finely-divided gold particles produce ruby glass, used in stained glass windows, though thin bulk gold films appear green or blue in transmitted light.







                share|improve this answer














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                edited 30 mins ago

























                answered 1 hour ago









                DrMoishe Pippik

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