Formula of thiosulphate, manganate and arsenate respectively are

Options

A. `S_(4)O_(6)^(2-),MnO_(4)^(2-),AsO_(3)^(3-)`
B. `S_(2)O_(3)^(2-),MnO_(4)^(2-),AsO_(4)^(3-)`
C. `S_(2)O_(3)^(2-),MnO_(4)^(2-),AsO_(3)^(3-)`
D. `S_(4)O_(6)^(2-),MnO_(4)^(2-),AsO_(4)^(3-)`

Answer

To solve the question regarding the formulas of thiosulfate, manganate, and arsenate, we can break it down step by step.

### Step 1: Identify the formula for Thiosulfate
Thiosulfate is a polyatomic ion with the formula \( S_2O_3^{2-} \). It consists of two sulfur atoms and three oxygen atoms. The correct representation of thiosulfate is:

\[ \text{Thiosulfate: } S_2O_3^{2-} \]

### Step 2: Identify the formula for Manganate
Manganate is another polyatomic ion, and its formula is \( MnO_4^{2-} \). It contains one manganese atom and four oxygen atoms. The correct representation of manganate is:

\[ \text{Manganate: } MnO_4^{2-} \]

### Step 3: Identify the formula for Arsenate
Arsenate is also a polyatomic ion, and its formula is \( AsO_4^{3-} \). It consists of one arsenic atom and four oxygen atoms. The correct representation of arsenate is:

\[ \text{Arsenate: } AsO_4^{3-} \]

### Final Answer
Thus, the formulas of thiosulfate, manganate, and arsenate respectively are:

\[ \text{Thiosulfate: } S_2O_3^{2-}, \quad \text{Manganate: } MnO_4^{2-}, \quad \text{Arsenate: } AsO_4^{3-} \]