Wednesday, 13 February 2013

1.14 deduce the electronic configurations of the first 20 elements from their positions in the Periodic Table


Groups are colmns in the periodic table; the group number represents the number of electrons on the outer shell.

Periods are rows on the periodic table; the row corresponds with number of shell.

So if you have an element on the third row down in group seven: it will have three shell and 7 electrons on its outer shell.
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7 comments:

  1. aisha22 May 2013 at 16:12

    I am not sure about this but i think that the answer here is that group 1 has one electron in its outer shell, group 2 has 2 etc and period 1 has one shell, period 2 has 2 shells etc. so group 1 period 2 will have 2 shells and on its outer shell there will be one electron

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    Replies
    1. HannahHelp28 May 2013 at 06:43

      Oh yeah, I'm not sure what I was thinking ;P

      Delete
    2. Unknown21 December 2017 at 02:53

      y u always get it wrong every time i go into the comments someone is correcting you

      Delete
  2. kclmedic26 May 2014 at 05:19

    thanks so much

    ReplyDelete
  3. Unknown23 February 2015 at 14:44

    Chicken

    ReplyDelete
  4. Unknown21 May 2015 at 11:44

    thanks sm save my life with sciences

    ReplyDelete
  5. Unknown16 December 2015 at 01:27

    Hi, just to let you know that you misspelt columns

    ReplyDelete

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