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Author Topic: can atoms have more electrons then protons?  (Read 5077 times)

Offline thebrain13

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can atoms have more electrons then protons?
« on: 28/11/2011 22:01:33 »
we hear all the time about ions where the atom has less electrons than protons. But are there any stable materials that have more electrons than protons? Or would the electric charge just blow it apart to quickly to study well?


 

Offline Soul Surfer

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can atoms have more electrons then protons?
« Reply #1 on: 28/11/2011 23:18:18 »
As far as I know there are no stable materials in solid or liquid form that are entirely composed of charged atoms because the repulsive forces of the charges would completely swamp any chemical bonding forces and blow the atoms apart whatever the polarity of their charge.  If such materials existed they could form the basis of incredible batteries

Charged atoms or ions only exist in gaseous plasmas or liquid solutions of ionic materials in an ionising solvent (usually water).  in both these cases there are always a balance of positive and negative charges. to make the materials neutral when looked at over a reasonable volume

It is true that negative ions are rarer than positive ones in the plasma state where the negative charges are usually just free electrons.  This is because plasmas have quite a high temperature because of the velocity needed to create the positive ionisation.

Positive and negative ions are normal in solutions the negative ones are usually acid radicals like chloride, sulphate, nitrate etc
 

Offline thebrain13

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can atoms have more electrons then protons?
« Reply #2 on: 29/11/2011 01:05:50 »
thanks, the question I was wondering after that was, what would electron orbitals look like on atoms with greater amounts of electrons vs. protons?
 

Offline Soul Surfer

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can atoms have more electrons then protons?
« Reply #3 on: 29/11/2011 09:50:55 »
generally the electronic structure of an ion is very similar to that of the atom with the same number of protons as electrons because it is the electronic behaviour that dominates.  This can be seen in the spectra of ionised atoms.

Now in tenuous gas at high temperatures where collisions are rare it is very easy to get very high degrees of ionisation of atoms and unusual spectrum lines  these can be seen in nebulae and auroras. 

however an atom can only hold as many electrons as the positive charge on the nucleus will hold so negative ions tend to be unstable and weakly bound and the only negative ions of any significance are halogens and possibly oxygen.  The weak binding also means that they dissociate at quite low temperatures.
 

Offline CliffordK

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can atoms have more electrons then protons?
« Reply #4 on: 29/11/2011 10:00:53 »
You can, of course, have particles that have a net charge (positive or negative???).



This would mean that some of the atoms in the kid's hair also have a net charge.
 

Offline lightarrow

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can atoms have more electrons then protons?
« Reply #5 on: 29/11/2011 12:58:48 »
But are there any stable materials that have more electrons than protons? Or would the electric charge just blow it apart to quickly to study well?
Answer N. 2
 

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can atoms have more electrons then protons?
« Reply #5 on: 29/11/2011 12:58:48 »

 

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