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What is the formal charge on the chlorine atom in the chlorate ion?

1 Answer

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Chlorate ion is ClO3⁻

x- charge of Cl,
every oxygen atom here has charge = -2,
whole ion has charge =-1.
So we can write
x+3*(-2)=-1
x-6=-1
x=+5
So the charge of chlorine =+5.
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