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Old November 13th, 2005, 08:46
naddia_abid naddia_abid is offline
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Default Hydrogen a Non Metal

hydrogen is a non metal then y is it placed in the group of metals ie GROUP I?
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  #2  
Old January 24th, 2010, 17:03
firebird firebird is offline
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Quote:
Originally Posted by cornball View Post
nice. Hydrogen becomes a metal at 1.4 megabars!! Would you get that pressure at the bottoms of the oceans?
There's an account of a journey to the deepest part of the ocean from pbs.

Quote:
On January 23, 1960, the Trieste reached the bottom of the Challenger Deep in the Pacific Ocean's Marianas Trench and set a deep-diving record -- 35,810 feet -- that will likely never be bested. No one has even tried. In fact, in the nearly 40 years since, no person has plunged to within 10,000 feet of the record.....

Less than five hours after they left the surface, Piccard and Walsh touched down onto the floor of the very deepest part of the ocean -- where the crushing pressure exceeds 16,000 pounds per square inch (more than a thousand times greater than the pressure at sea level), and where Piccard reported seeing a fish swimming by. The divers then released the steel shot, and began their rise to the surface.

http://www.pbs.org/wnet/savageseas/d...e-journey.html
16,000 pounds per square inch = 1,100 bar pressure in the deepest ocean depths.

You need pressure more than 1,000 times greater than this for metallic hydrogen.
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Old January 24th, 2010, 17:12
firebird firebird is offline
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Just thinking, the deepest ocean depth is 35,810 feet for a pressure of 1,100 bar.

To get metallic hydrogen we need 1.4 million bar, which is 1,273 times more pressure than at the bottom of the ocean.

Therefore if the deepest ocean depth was 35,810 x 1,273 = 4,5586,130 feet deep, we could get metallic hydrogen there.

4,5586,130 feet = 8,634 miles ocean depth for metallic hydrogen.
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Old January 25th, 2010, 19:02
shellgirl shellgirl is offline
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guys, i'm new here and i just wanna say thank you for opening my eyes with very interesting discussion.
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Old January 26th, 2010, 11:23
KathChem82 KathChem82 is offline
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I think no metallic hydrogen is formed on earth. It was found in jupiter. Jupiter is much bigger than the earth. The pressure in its core is much higher that that of earth. So it is very possible to have metallic hydrogen here. Well haven't heard yet of metallic hydrogen that exists here on earth. None that I know.
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Old January 26th, 2010, 11:52
KathChem82 KathChem82 is offline
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I think no metallic hydrogen is formed on earth. It was found in jupiter. Jupiter is much bigger than the earth. The pressure in its core is much higher that that of earth. So it is very possible to have metallic hydrogen THERE. Well haven't heard yet of metallic hydrogen that exists here on earth. None that I know.

I just had a correction. Sorry.....
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Old January 31st, 2010, 19:11
KathChem82 KathChem82 is offline
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The distance from the earth's surface to the core is only around 4000 miles.
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Old February 1st, 2010, 03:21
firebird firebird is offline
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Quote:
Originally Posted by KathChem82 View Post
The distance from the earth's surface to the core is only around 4000 miles.
Of course it is. I'd have thought nobody needed it pointed out.
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