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In the reaction

2Mg + SnCl4 −> 2MgCl2 + Sn ,
how many electrons are involved in the conversion of SnCl4 to Sn?
1. three
2. one
3. four
4. two

1 answer

Sn in SnCl4 has an oxidation state of +4; in Sn it is zero.

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