If the valency of iodide is 2 why the formula of lead iodide is PbI2

1.	If the valency of iodide is 2 why the formula of lead iodide is PbI2
Answer» Answer: Actually iodide is I^- and has valency of 1 Explanation: Its valency is ONE BCOS it is a HALOGEN and needs nly one elcetron.Pb has valency of 2. So using crisscross method we get PBI2 Pb2+ + 2I- ----->PbI2

Answer»

Answer:

Actually iodide is I^- and has valency of 1

Explanation:

Its valency is ONE BCOS it is a HALOGEN and needs nly one elcetron.Pb has valency of 2.

So using crisscross method we get PBI2

Pb2+ + 2I- ----->PbI2

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