The Naked Scientists

The Naked Scientists Forum

Author Topic: Atoms, shells  (Read 9192 times)

Offline erickejah

  • Sr. Member
  • ****
  • Posts: 347
  • Parking? I make my own parking spot!!
    • View Profile
Atoms, shells
« Reply #25 on: 14/01/2009 02:36:31 »
do those letters stand for anything?
 

Offline Chemistry4me

  • Neilep Level Member
  • ******
  • Posts: 7709
    • View Profile
Atoms, shells
« Reply #26 on: 14/01/2009 02:37:29 »
Huh? What do you mean? In school of course! ;D ;D This ins't exactly rocket science, no offense intended dude  ;)

If you want me to do the ruthenium example, I can show you. :)
Even better, why don't you try it yourself.
 

Offline Chemistry4me

  • Neilep Level Member
  • ******
  • Posts: 7709
    • View Profile
Atoms, shells
« Reply #27 on: 14/01/2009 02:38:29 »
Historical names:
s = sharp
p = principal
d = diffuse
f = fundamental
 

Offline erickejah

  • Sr. Member
  • ****
  • Posts: 347
  • Parking? I make my own parking spot!!
    • View Profile
Atoms, shells
« Reply #28 on: 14/01/2009 02:39:34 »
ok ill try
 

Offline Chemistry4me

  • Neilep Level Member
  • ******
  • Posts: 7709
    • View Profile
Atoms, shells
« Reply #29 on: 14/01/2009 02:39:46 »
I just going to pop out for a little while, nice to chat erickejah!
 

Offline erickejah

  • Sr. Member
  • ****
  • Posts: 347
  • Parking? I make my own parking spot!!
    • View Profile
Atoms, shells
« Reply #30 on: 14/01/2009 03:00:05 »
First  ruthenium has 44 electrons:

I will use 4 shells because they add up to 60 and 44 can fit in there.
 1st shell: (max2)
1s^2
2nd shell: (max8)
2s^2_2p^6
3rd shell: (max18)
3s^2_3p^6_3d^10
4th shell: (max32)
4s^2_4p^6_4d^8

Now ill fill the spaces in between, from the s to f
 

Offline erickejah

  • Sr. Member
  • ****
  • Posts: 347
  • Parking? I make my own parking spot!!
    • View Profile
Atoms, shells
« Reply #31 on: 14/01/2009 03:01:30 »
if the 44 electrons fit in the 1st four shells why did they added the 5th one?
like they show in this http://www.webelements.com/ruthenium/atoms.html web.
 

Offline Chemistry4me

  • Neilep Level Member
  • ******
  • Posts: 7709
    • View Profile
Atoms, shells
« Reply #32 on: 14/01/2009 04:50:50 »
Remember:
Electrons fill orbitals of lowest energy first. The order of in which electrons fill sublevels is:
1s → 2s → 2p → 3s → 3p → 4s → 3d → 4p → 5s → 4d → 5p → 6s → 4f → 5d → 6p → 7s → 5f → 6d
 

Offline Chemistry4me

  • Neilep Level Member
  • ******
  • Posts: 7709
    • View Profile
Atoms, shells
« Reply #33 on: 14/01/2009 04:57:07 »
1s → 2s → 2p → 3s → 3p → 4s → 3d → 4p → 5s → 4d → 5p → 6s → 4f → 5d → 6p → 7s → 5f → 6d

Ruthenium: 1s22s22p63s23p64s23d104p64d75s1.

Aha, ruthenium wasn't a good one to choose, because what I've told you sort of goes out the door!
 

Offline Chemistry4me

  • Neilep Level Member
  • ******
  • Posts: 7709
    • View Profile
Atoms, shells
« Reply #34 on: 14/01/2009 05:07:57 »
I should also have added that: if there are orbitals of the same energy in a sublevel, the electrons will fill them singly until there is one electron in each orbital. In this way, electron-electron repulsion is minimised. For example nitrogen's electron configuration is: 1s22s22p3 and if you think back to that diagram, there will be 2 electrons in the first red box (1s2), 2 in the orange box above that (2s2) but the other three orange boxes will have one electron each instead of two in the first one, one in the second and none in the third.
 

Offline erickejah

  • Sr. Member
  • ****
  • Posts: 347
  • Parking? I make my own parking spot!!
    • View Profile
Atoms, shells
« Reply #35 on: 15/01/2009 03:22:50 »
i got it now  ;D ;D [8D] [8D], i feel smart. tx for the explanation I'm sure u have gain prestige in this forum. not much people has that patience. :D
 

Offline Chemistry4me

  • Neilep Level Member
  • ******
  • Posts: 7709
    • View Profile
Atoms, shells
« Reply #36 on: 15/01/2009 03:48:00 »
No worries erickejah :), any time! ;)
 

The Naked Scientists Forum

Atoms, shells
« Reply #36 on: 15/01/2009 03:48:00 »

 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums