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Renee99 Group Title

Chemistry Question: Which of the following elements has two valence electrons? -Sr<<My answer -Na -Al -B is this right?

  • one year ago
  • one year ago

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  1. joshuamcelwain Group Title
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    Since valence electrons are those in the most outer shell of any element, I would say you chose the correct one!

    • one year ago
  2. Renee99 Group Title
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    Yay! I thought so but for some reason, I was thinking Na, Sodium, because I couldn't remember if it had 1 or 2 valence electrons, but I'm pretty sure it only has one... Thanks for your help!

    • one year ago
  3. joshuamcelwain Group Title
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    Yeah sodium actually only has 1!

    • one year ago
  4. Renee99 Group Title
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    okay, thanks again!

    • one year ago
  5. Susan9419 Group Title
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    your correct ;D it is sr ;D

    • one year ago
  6. Renee99 Group Title
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    okay, thanks! I'm gonna be posting some more, do u think could u help me with those as well?

    • one year ago
  7. Renee99 Group Title
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    Carbon has an atomic number of 6, but the following orbital notation for carbon is incorrect. Explain the error in terms of the rules for electron arrangements.

    • one year ago
  8. Renee99 Group Title
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    • one year ago
  9. Susan9419 Group Title
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    sure ill help ;D

    • one year ago
  10. Renee99 Group Title
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    thanks! :)

    • one year ago
  11. Susan9419 Group Title
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    Electrons repel each other, since they have like charges. You put them in different orbitals if at all possible, since that keeps them naturally further apart, and lowers the energy of the electron configuration. You only start doubling them up when you must.

    • one year ago
  12. Renee99 Group Title
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    I have read that one before, the link wont open properly

    • one year ago
  13. Susan9419 Group Title
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    well thats the explaination and the picture should be like this |dw:1349193339649:dw|

    • one year ago
  14. Renee99 Group Title
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    do u think u could help me put it in my own word, i'm kind of bad at it but I do get the basic idea of what there saying. It just kind of confuses me, I wasn't able to read my lesson on this topic yet, so Im pretty much doing it from what I already know.

    • one year ago
  15. Renee99 Group Title
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    These are all of my questions answered, we can look over them later when we're done with the other one. http://answers.yahoo.com/question/index;_ylt=AoiOdWTAB6ymkg8yo6ZD147sy6IX;_ylv=3?qid=20121002090220AAnTWQD http://answers.yahoo.com/question/index?qid=20121002085855AAjGv2O

    • one year ago
  16. Renee99 Group Title
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    sorry lost connection there for a minute

    • one year ago
  17. Renee99 Group Title
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    Which of the following is a possible noble gas notation? -[Xe] 6s26p6 -[Kr] 5s25d85p6<<My answer -[Xe] 6s25d106p4 -[Kr] 5s24d105p3

    • one year ago
  18. Renee99 Group Title
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    Which of the following is a reasonable ground-state electron configuration? -1s21p62s22p63s2 -1s22s22p63s23p64s24d8<<My answer -1s22s22p63p6 -1s22s22p63s1

    • one year ago
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