Oxidiation states of P in and are respectively
+3, +5, +4
+5, +3, +4
+5, +4, +3
+3, +4, +5
As learnt
Hypophosphoric Acid -
H4P2O6 (+4), tetrabasic
- wherein
Phosphorus Acid -
H3PO3 (+3), dibasic
- wherein
Orthophosphoric Acid -
H3PO4 (+5), tribasic
- wherein
, let x be the O.S. of P
then, 4+2x+5(-2)=0
, let x be the O.S. of P
then, 4+2x+6(-2)=0
, let x be the O.S. of P
then, 4+2x+7(-2)=0
Option 1)
+3, +5, +4
This option is incorrect
Option 2)
+5, +3, +4
This option is incorrect
Option 3)
+5, +4, +3
This option is incorrect
Option 4)
+3, +4, +5
This option is correct