Chemical Forums
Chemistry Forums for Students => High School Chemistry Forum => Topic started by: zaric on February 22, 2009, 03:58:50 AM
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Is hydrogen a metal or non-metal?
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It can act as either. It's one of the cases that doesn't fall into the category of metal or non-metal (or metaloid).
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I've never heard of hydrogen being referred to as a metal. Where can it be a metal?
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You can read more about metallic hydrogen here:
http://en.wikipedia.org/wiki/Metallic_hydrogen
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One important property of metals is the propensity to lose electrons and become positively charged. Hydrogen often will lose electrons to form a positively charged ion (a proton)*. Of course, hydrogen can also gain an electron (like a nonmetal) to form a hydride ion.
* the true story is a little bit more complicated since hydrogen doesn't really form free protons in water, it forms hydronium ions.
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Due to this both metallic and non-metallic character of Hydrogen, the position of Hydrogen in the preiodic table is debated. Due to this, it is also known as "Rogue Element."