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    Ion X+3 has the following electronic configuration 1s2 2s2 2p6 . Which group and which period of periodic table does this element belong?
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    What part of this are you struggling with? We're not going to just do your homework for you.

    The ion has a charge of 3+, thus there have been 3 elections removed from the outer shell.

    The inner shell is full and irrelevant here.

    The 2nd shell is also full with 8 electrons in total.

    You will need to add 3 electrons to this configuration in order to balance the positive charge, this is because 1 electron has a charge fo -1, so 3 electrons = -3. Applying thst to X^+3, you'll adding 3 electrons (ie 3 negetive charges) you''ll balance the charge and you get X, which is how it would appear in the periodic table.

    hint: (you'l need to add another shell). Use this guide if you are unsure how to do it
    https://en.wikibooks.org/wiki/Genera...e_of_Stability
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    (Original post by Et Tu, Brute?)
    What part of this are you struggling with? We're not going to just do your homework for you.

    The ion has a charge of 3+, thus there have been 3 elections removed from the outer shell.

    The inner shell is full and irrelevant here.

    The 2nd shell is also full with 8 electrons in total.

    You will need to add 3 electrons to this configuration in order to balance the positive charge, this is because 1 electron has a charge fo -1, so 3 electrons = -3. Applying thst to X^+3, you'll adding 3 electrons (ie 3 negetive charges) you''ll balance the charge and you get X, which is how it would appear in the periodic table.

    hint: (you'l need to add another shell). Use this guide if you are unsure how to do it
    https://en.wikibooks.org/wiki/Genera...e_of_Stability

    Is this element sodium?
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    (Original post by BioOx)
    Is this element sodium?
    No. Sodium doesn't form a stable 3+ ion.
    If X3+ has a particular electron configuration then X will have 3 more electrons that its ion.
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    (Original post by BioOx)
    Is this element sodium?
    Why do you think it is sodium? Elementary sodium as 11 electrons, so an Na3+ ion was wouldn't have the structure 1s22s22p6

    I think you really need to brush up on the basics of electronic structure.

    The ion has the structure:

    X^3+ = 1s22s22p6

    Therefore adding 3 electrons to balance the positive charge gives you

    X = 1s22s22p63s?3p?

    You can do this simply by adding all of the electrons in the X3+ and then adding 3 electrons:

    X3+ + e- = X2+
    X2+ + e- = X+
    X+ + e- = X

    You started with X3+ = 1s22s22p6 , which is a total of how many electrons?

    Add 3 electrons to that, then find which element has that number of electrons on the periodic table.
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    (Original post by Et Tu, Brute?)
    Why do you think it is sodium? Elementary sodium as 11 electrons, so an Na3+ ion was wouldn't have the structure 1s22s22p6

    I think you really need to brush up on the basics of electronic structure.

    The ion has the structure:

    X^3+ = 1s22s22p6

    Therefore adding 3 electrons to balance the positive charge gives you

    X = 1s22s22p63s?3p?

    You can do this simply by adding all of the electrons in the X3+ and then adding 3 electrons:

    X3+ + e- = X2+
    X2+ + e- = X+
    X+ + e- = X

    You started with X3+ = 1s22s22p6 , which is a total of how many electrons?

    Add 3 electrons to that, then find which element has that number of electrons on the periodic table.
    I found it it's aluminum right?
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    (Original post by BioOx)
    I found it it's aluminum right?
    yes.

    But do you understand it?
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    Yes now!!! Thank you
 
 
 
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