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    niksom's Avatar
    niksom Posts: 3, Reputation: 1
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    #1

    Sep 26, 2008, 08:23 PM
    How to calculate valency of ions
    Please make me understand how to calculate valencies of various ions e.g. so4 ,po4, etc
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Sep 28, 2008, 07:10 AM

    That's a bit complicated, so I'll tell it as simple as possible. Here we go.

    SO4

    Let's say that sulphur has a valency of 6 and oxygen has a valency of 2. There are 4 oxygen, so, the total valency is 8. Since the oxygen are with the sulphur, the remaining valency will be 8-6 = 2. So, SO4 has valency 2.

    PO4

    Phosphorus, valency 5, oxygen, still 2. Total valency for oxygen = 2x4=8. Remaining valency=8-5= 3.

    Hope this helped!
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