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Topic: Which Is More Important to an Atom's Stability?  (Read 1961 times)

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Offline logan3

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Which Is More Important to an Atom's Stability?
« on: July 07, 2014, 03:43:09 PM »
I'm learning about the octet rule and stability -- that the most common and preferred state of atoms/molecules are those which have the lowest energy or most stability. When an atom's valence shell has an octet it is the most stable, like the noble gases; and that many atoms lose or gain electrons to reach this octet state. However, I also read that the atoms that gain or lose electrons are also less stable because the number of protons and electrons no longer match -- the atom now has a net positive or negative charge.

So I was wondering which state do atoms prefer the most? Forming the octet in their valence shells or staying neutral by having the same number of protons and neutrons electrons? Also, if an atom gains electrons to make an octet, then doesn't this counter it desiring the lowest energy state? And isn't this loss of lowest-energy stability exacerbated by the net charge no longer being neutral?

Thank-you

Mod Edit : changed to strike through for clarity.
« Last Edit: July 07, 2014, 07:42:11 PM by billnotgatez »

Offline billnotgatez

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Re: Which Is More Important to an Atom's Stability?
« Reply #1 on: July 07, 2014, 06:50:20 PM »
 
Quote
or staying neutral by having the same number of protons and neutrons?

@logan3
I am trying to understand the context of your question.
Did you mean to this or did you mean protons and electrons?

Offline logan3

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Re: Which Is More Important to an Atom's Stability?
« Reply #2 on: July 07, 2014, 07:18:37 PM »
Yes, it was a typo. I changed it.

Offline billnotgatez

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Re: Which Is More Important to an Atom's Stability?
« Reply #3 on: July 07, 2014, 07:38:42 PM »
Quote
I changed it.
This is suggested against in the forum rules
I will change to strike through

Offline Borek

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Re: Which Is More Important to an Atom's Stability?
« Reply #4 on: July 08, 2014, 02:48:27 AM »
Stability is not a universal thing - it depends on surroundings. As these change the most stable form changes as well. Sometimes it will be a neutral atom, sometimes it will be an isolated ion with an octet, or an atom within a compound (with an octet).

Noble gas configuration works best for atoms of 2nd period elements in compounds.
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