if 2 atoms fulfill the same quantum number...
11-09-2004, 06:34 PM
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if 2 atoms fulfill the same quantum number...
Ca vs. Sc
4s^2 vs. 4s^2 3d^1
20 electrons vs. 21 electrons
20 protons vs. 21 protons
Which would be bigger in size?
4s^2 vs. 4s^2 3d^1
20 electrons vs. 21 electrons
20 protons vs. 21 protons
Which would be bigger in size?
11-09-2004, 06:49 PM
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Originally Posted by LT69Padawan6
Sc - has another energy level
Also this really doesn't apply to the assignment since most of them are ions...but...if size decreases in a period as you go across from left to right, wouldn't this prove that wrong? (in the case of the non-charged in the previous question) I'm confused
11-09-2004, 06:57 PM
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What is also more confusing to this is that even though Sc does have one electron in the 3d subshell, it has one more proton. More protons=more internal pull on the electrons which would decrease the size. So I don't know if having more electrons would necessarily make it larger overall. I don't know though
11-09-2004, 07:03 PM
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Originally Posted by redgoober4life
but if it were Sc (1+), Ca would be larger?
11-09-2004, 07:05 PM
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Originally Posted by redgoober4life
What is also more confusing to this is that even though Sc does have one electron in the 3d subshell, it has one more proton. More protons=more internal pull on the electrons which would decrease the size. So I don't know if having more electrons would necessarily make it larger overall. I don't know though
11-09-2004, 07:05 PM
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Originally Posted by Kestrel
Correct. The outer electron is lost, and there are now 21 protons to attract 20 electrons, so it pulls them in closer.