chemistry

How many valence electrons are shared, gained, or lost by each atom of the six compounds?
• N2 • CCl4 • SiO2
• AlCl3 • CaCl2 • LiBr

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  1. I bet you can do LiBr without our help and you can probably do the others as well. You know that Li will be +1 (loses electron) and Br will be -1(gains electron)
    Google valences of each or look in your book

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  2. so does that mean that Li will lose 1 electron and Br will gain 1 electron

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  3. Yes, that leaves them both with full shells. This has to be in your book!
    or google ionic bond and covalent bond

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  4. http://quatr.us/chemistry/atoms/covalent.htm

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  5. http://chem.libretexts.org/Core/Physical_and_Theoretical_Chemistry/Chemical_Bonding/Fundamentals_of_Chemical_Bonding/Ionic_Bonds

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  6. For exampleI Googled

    N2 chemical bond and got:
    http://www.gcsescience.com/a25-covalent-bond-nitrogen-gas-molecule.htm

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  7. so Cl gain 7 electrons right

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  8. would N2 have to gain 3 electrons to have a full shell?

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  9. oh wait will Cl gain 1 electron to have a full shell?

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  10. Of course Cl will gain 1 e to have a full shell which give it a -1 charge.However, if combined with C it will share electrons with Cl to form four covalent bonds. SiO2 is covalent as is N2.

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  11. none of this makes any sense to me ;-;

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