3. Calculate the oxidation no for the following (5)
a) C6H1206 (Carbon)
b) Na2B407 (Boron)
c) BrF3 (Beryllium)
d) CIO3 - (Chlorine)
e) Na4[Fe(CN)6]
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Answer:
The overall charge of molecule is zero (because it's not an ion). Since sodium is a 1A family member, you can assume that the charge is +1. The charge of oxygen is almost always −2 so you can assume that as well.
(+1)+ oxidation of Cl+3(−2)=0
So the oxidation of chlorine in that problem is +5.
So answer is C.
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