1.

Formula of thiosulphate, manganate and arsenate respectively are

Answer»

`S_(4)O_(6)^(2-),MnO_(4)^(2-),AsO_(3)^(3-)`
`S_(2)O_(3)^(2-),MnO_(4)^(2-),AsO_(4)^(3-)`
`S_(2)O_(3)^(2-),MnO_(4)^(2-),AsO_(3)^(3-)`
`S_(4)O_(6)^(2-),MnO_(4)^(2-),AsO_(4)^(3-)`

Answer :D


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