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What is the valency of : Sulphur in SF6

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Valency = No. of electrons in valence shell
For atoms with more than 4 valence electrons-
Valency = 8- No. of electrons in its outermost shell
In SF6, Sulphur is present in the 3rd group which means it can expand its octet by donating all of its 6 electrons.
Hence, it donates all the 6 electrons to each fluoride atom.

Final Answer:

Hence, the valency of Sulphur in SF6 is 6.

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