Thursday, 16 May 2013

1.30 recall the charges of common ions in this specification

K +
Na +
Li +
H +

Mg 2+
Ca 2+

Al 3+

Cl-
Br-
I-
F-
OH-

NO3-

SO4 2-

CO3 2-

17 comments:

  1. Do we need to know these off by heart? Will we not be given a sheet of ionic charges with the periodic table we're given at the beginning of the exams? Thanks.

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    1. Sadly Henry, we do need to know these off by heart.

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    2. Not entirely- you should be able to tell each element's charges by their placement on the periodic table.

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  3. how do you know charges by the periodic table m8

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  4. If the element is in group 1 it has a charge of +
    Group 2= 2+
    Group 3 = 3+
    Group 5 = 3-
    Group 6 = 2-
    Group 7 = -
    Group 8 = neutral

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  5. Did you go to island school? Hannah

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