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ranyai12

What is the atom for the electron configuration [Ne]3s1 3p1? is it Mg or Ne-? and just to make sure,, this is an excited state right?

  • one year ago
  • one year ago

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  1. ranyai12
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    @eseidl

    • one year ago
  2. eseidl
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    Mg, excited state.

    • one year ago
  3. ranyai12
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    can u please explain?

    • one year ago
  4. Rosie123
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    @eseidl please help on my question

    • one year ago
  5. Rosie123
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    after this ?

    • one year ago
  6. eseidl
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    Yeah. Ok your electron "orbital" filling rules are 1s,2s,2p,3s,3p...

    • one year ago
  7. eseidl
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    s orbitals can take 2 electrons max. P orbitals can take 6.

    • one year ago
  8. ranyai12
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    but why isnt it Ne-?

    • one year ago
  9. eseidl
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    We fill 3s BEFORE 3p. Since 3s only has one electron in the s orbital, but also has one in the p orbital, it is an excited state.

    • one year ago
  10. ranyai12
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    oh it it because itll give it an extra electron?

    • one year ago
  11. ranyai12
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    is it*

    • one year ago
  12. eseidl
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    Now why is it Mg...well, Mg is atomic number 12. So, the neutral atom has 12 electrons. We get: \[1s^2,2s^2,2p^63s^2\]for the neutral atom. But if we exited the atom, bumping 1 electron into the 3p orbital, we have a (slightly) excited Mg atom.

    • one year ago
  13. ranyai12
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    oh ok thanks!!!

    • one year ago
  14. eseidl
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    Why isn't it Ne-...

    • one year ago
  15. eseidl
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    well, Ne- has 11 electrons. We get:\[1s^2,2s^2,2p^63s^1\]Not enough electrons to be Ne-

    • one year ago
  16. ranyai12
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    oh ok! thanks again!

    • one year ago
  17. eseidl
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    It could be an exited state of \[Ne^{-2}\] though....

    • one year ago
  18. eseidl
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    But yeah, I think that narrows it down for you :)

    • one year ago
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