7 Answers

Well, there are three Cl, and the rule says that the oxidation number on an ion is equal to its charge. So 3 x 1 = 3. However, there is a net negative charge of 1 on the compound. For this to be so, Sn must be 2+ in charge, giving a net 1 charge. (2+) + (3) = 1 for the compound.

Sn Oxidation Number

Cl has oxidation number 1 let x = oxidation number Sn x + 3 (1) = 0 x =+3 note Sn does not have oxidation number = +3

SnCl3
Let oxidation number of Sn be x
Chlorine 1
x+3*(1)= 1
x3=1
x=+2

I assume the negative sign you are showing is for the whole thing. If so the Sn must be +2.
Chloride ions are 1 when combined with metals, so since there are three of them, the Sn must be +2 to have a minus 1 leftover.
But if you are asking just about neutral SnCl3 then the Sn has to be +3.

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What is the oxidation number of Sn in SnCl3^()?

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Hi t j: It should be [SnCl3] with tin in its common oxidation state of Sn(II). It is an AX3E system, trigonal pyramidal. dr p