1.

Lead has been placed in qualitative group analysis Ist and 2nd because

Answer»

It shown the valency one and two
it FORMS insoluble `PbCI_(2)`
It form LEAD salphide
`PbCI_(2)` is parially soluble in water

SOLUTION :Pb form `PbCI_(2)` in GROUP I and PbS in group II Lead salt are partiallysoluble in water


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