Hi James, The ionic radii vary with state and environment. Without knowing what is the appropriate one for Ag electrochemistry in water, I just looked for the smallest.
One set of data is at http://www.webelements.com/webelements/elements/text/radii/Ag.html The one from which I got the value of 2.5 for the radius of Ag in aqueous solution is table 8.2 on page 8.4 , Lange's Handbook of chemistry, 15th, John A. Dean, McGraw-Hill. Ivan says that diameter includes the water of solvation, but there was no mention of that in the table in Lange's. When I have time I will look up the radii of water; 4 x that, I think will in itself be larger than the value 2.5 Angstroms, but that is only a guess. James Osbourne Holmes [email protected] FTNWO -----Original Message----- From: James Allison [SMTP:[email protected]] Sent: Thursday, June 01, 2000 9:52 AM To: [email protected] Subject: Re: CS>Dr Clark on CS James, can you please tell me from what reference material or observations you base your questions on? I'm going to a college medical library this weekend for some extensive research and would like to go over whatever material you are basing your statements on. Thanks in advance! Yours in health, James Allison --------------------------------------------- Allisons Apothecary - Your On-Line Apothecary Visit Us Soon - http://allisonsapothecary.com Home of the $39.95 Colloidal Silver Generator And Wonderful Prices On Quality Products Like MSM, Ionic Mineral Waters and Apricot Kernels --------------------------------------------- ----- Original Message ----- From: James Osbourne, Holmes <[email protected]> To: <[email protected]> Sent: Wednesday, May 31, 2000 8:53 PM Subject: RE: CS>Dr Clark on CS > Hi James and all, > > I can't answer your question directly James, but I have a couple of > questions myself. > > "When current is applied to silver in solution the particles that break off > will always be the same size: 1.26 angstroms (.000126 microns)." > > Or, 0.126 nm. > > "Simply put", this cannot be so, because the effective ionic radius of > silver in water, a single atom, is 2.5 angstroms, or 0.25 nm. So the > diameter will be 5 angstroms, Or, about four times the diameter of the > alleged "will always be.. particle size'. > > A little alchemical transmutation there, or did the atom shrink in the > water? > > Does anyone know Dr. Clark's source for that statement? > > The center-to-center distance of atoms in metallic silver is 288.9 pm, or > 0.2889 nm. So, two Ag atoms, [ignoring effects of very small groups of > atoms] will be about 0.5778 nm in overall "diameter" [they aren't round]. > This is the smallest possible "colloidal" silver particle. Anything > smaller will be a single atom, a monatomic ion: i.e. dissolved silver. > > If it is true that the particle size is always the same why do I see, in EM > images of silver particles from a sol, discrete particles which are several > times larger than others? > > Did these larger-than-0.126 nm particles [which obviously cannot exist, at > least as what we define as silver...] form immediately from 1.26 angstrom > particles after leaving the electrode? How, if the particles all have a > positive charge? Is the force moving them away from the electrode large > enough to smash them together in spite of the repulsive force due to the > mutual positive charges? > > 0.5 nm size has been measured in HVAC sol which tests negative for > monatomic silver [via ISE] in a sol with a range of 0.5 to 9 nm, but I do > not know the size distribution. > > Also: "The charge slowly dissipates, and > therefore the freshness of the colloid is important." > > How does the charge dissipate?. Where do the electrons come from? Who says? > > Some HVAC samples have remained unchanged for over a year. > > > James Osbourne Holmes > [email protected] > FTNWO > > > -----Original Message----- > From: James Allison [SMTP:[email protected]] > Sent: Wednesday, May 31, 2000 3:25 PM > To: [email protected] > Subject: Re: CS>Dr Clark on CS > > > http://www.drclark.ch/bulletin/cs.htm > > The following are a couple of quotes from the above site, and then a > question: > > "What exactly is Colloidal Silver (CS)? Simply put, colloids are extremely > minute-sized silver particles suspended in water, with a positive > electrical > charge. The smaller the silver particles, the more effective it has proven > to be. The best Colloidal Silver is produced at the molecular level. A > small > DC current is passed through an electrolyte with silver electrodes. Minute, > molecular sized particles are drawn off the positive electrode, having a > positive electrical charge. This electrical charge is of primary importance > to healing and antibacterial qualities. The charge slowly dissipates, and > therefore the freshness of the colloid is important." > > "When current is applied to silver in solution the particles that break off > will always be the same size: 1.26 angstroms (.000126 microns)." > > Now, once again, can somebody please tell me how AC units make a better > solution than LVDC units? > > Yours in health, > James Allison > > --------------------------------------------- > Allisons Apothecary - Your On-Line Apothecary > Visit Us Soon - http://allisonsapothecary.com > Home of the $39.95 Colloidal Silver Generator > And Wonderful Prices On Quality Products Like > MSM, Ionic Mineral Waters and Apricot Kernels > --------------------------------------------- > > > > -- > The silver-list is a moderated forum for discussion of colloidal silver. > > To join or quit silver-list or silver-digest send an e-mail message to: > [email protected] -or- [email protected] > with the word subscribe or unsubscribe in the SUBJECT line. > > To post, address your message to: [email protected] > Silver-list archive: http://escribe.com/health/thesilverlist/index.html > List maintainer: Mike Devour <[email protected]> >
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