From: John Woodgate
Subject: Re: Reducing contact resistance for low volt use?
Date: Wed, 8 Jan 2003 19:53:46 +0000
Organization: JMWA Electronics Consultancy
Reply-To: John Woodgate
NNTP-Posting-Date: Wed, 8 Jan 2003 22:10:27 +0000 (UTC)
X-Newsreader: Turnpike (32) Version 4.01 <5Z8C9wtxbnpWyFnyfFzqmVF739>
I read in sci.electronics.design that DarkMatter wrote (in <8sio1vcvmlscq2bokvmonkdt8n5qoq9go1@4ax.
com>) about 'Reducing contact resistance for low volt use?', on Wed, 8
> What is the arrangement? The two 18 electron shells in silver are
>probably part of it being the best.
> Look at the second shell on all of your metals. Oddly, those same,
>more loosely arranged second shells seem to be part of what makes
>those metals so oxide inhibiting. Gold and Platinum being the best,
>though not in that order.
I think that's fairly described as obfuscation. The second shell always
has 8 electrons if the atomic number exceeds 10. Transition behaviour,
in which outer shells are filled preferentially, does not occur until
atomic number exceeds 20.
Ag has the structure 188.8.131.52.1.
Au has the structure 184.108.40.206.18.1
Pt has the structure 220.127.116.11.17.1
Pt rarely, if ever, shows univalency.
Your point is?
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
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