The hybridisation of `P` in phosphate ion `(PO_4^(2-))` is the same as in :

The State of hybridisation of phosphorus (Z=15) in phosphate ion (PO_(4)^(3-)) is the same as

The hybridisation of P in PO_4^(3-) is same as in :

In a gravimetric determination of P, an aqueous solution of dihydrogen phosphate ion H_(2)PO_(4)^(-) is treated with a mixture of Ammonium and magnesium ions to precipitate magnesium ammonium phosphate [Mg(NH_(4))PO_(4).6H_(2)O] .This is heated and decomposed to magnesium pyrophosphate (Mg_(2)P_(2)O_(7)) . Which is weighed. A solution of H_(2)PO_(4)^(-) yielded 1.85 g of Mg_(2)P_(2)O_(7) . What weight (grams) of NaH_(2)PO_(4) was present originally.

In a gravimetric determination of P , an aqueous solution of dihydrogen phosphate ion [H_(2)PO_(4)^(-)] is treated with a mixture of ammonium and magnesium ions to precipitate magnesium ammonium phosphate, [Mg(NH_(4))PO_(4).6H_(2)O] . This is heated and decomposed to magnesium pyrophosphate [Mg_(2)P_(2)O_(7)] , which is weighed. A solution of H_(2)PO_(4)^(-) yielded 1.054 g of Mg_(2)P_(2)O_(7) . What weight of NaH_(2)PO_(4) was present originally? (Na=23, H=1, P= 31, O=16,Mg=24)

Hybridisation of 'P' in PO_4^(3-) is same as that of : -