Chemistry Question: Confusion about sub shells and bonding

Discussion in 'Off Topic' started by Lil Mayz, Nov 1, 2008.

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  1. The Morningstar

    The Morningstar Notebook Guru

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    The 4s energy level is filled before the 3d because of the shape of the orbitals. The d-orbitals experience less of the effect of the increasing effective nuclear charge (which increases with atomic number due to increasing protons in the nucleus) than do the following s orbitals. The orbital shape described the locality where you're likely to 'find' the electron (it's not a particle whizzing around the nucleus) and the shape of the s orbital (a sphere) means the electron is closer to the nucleus than the d-orbital and so is stabilised by the nucleus to a greater degree than the do-orbital. Thus it has a slightly lower energy and fills first...

    This is, however, irrelevant when we go back to your original question! Argon has a closed shell. The orbitals which contain electrons are filled so it's closed. There's nothing in any of the d-orbitals so you can ignore them. An orbital simply described where an electron would be if the atom had it, that's all. If there's no electron there, there's no orbital.

    This gets confusing when you try and correlate it with what you learned last year due to the way science is taught. The full picture is never painted in one go because it would be far to complicated. You learn one level in order to get the concepts, then you go to a greater depth in order to get a more complete understanding.

    Does this make sense or does it sound like a rambling academic?
     
  2. mattireland

    mattireland It used to be the iLand..

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    lol Mayz, looks like we're posting in the same place for help with our HW. Good luck and see ya tomorrow!
     
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