How many substances have underlined atoms of different nature?
$N a_{2} S_{4} - - - O_{6}, N a_{2} S_{2} - - - O_{3}, C a O C l_{2} - -- -, N_{2} - - - H_{4} O_{3}, F e_{3} - -- - O_{4}, K I_{3} - -, C r O_{5} - - -, K_{2} C r_{2} - -- - O_{7}$

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Solution

The correct option is A 7
Seven substances have underlined atoms of different nature. These include
$N a_{2} S_{4} - - - O_{6}, N a_{2} S_{2} - - - O_{3}, C a O C l_{2} - -- -, N_{2} - - - H_{4} O_{3}, F e_{3} - -- - O_{4}, K I_{3} - -, C r O_{5} - - -$ . The underlined atoms in these substances have different oxidation numbers.

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Similar questions

N a_{2} S_{4} O_{6}

{C r O}_{5}

- 1

K_{2} C r_{2} O_{7}

What are the oxidation number of the underlined elements in each of the following and how do you rationalise your results?

(a) KI₃ (b) H₂S₄O₆ (c) Fe₃O₄ (d) CH₃CH₂OH (e) CH₃COOH

C a O C l_{2} + H_{2} O ⟶ C a (O H)_{2} + C l_{2}

2 K I + C l_{2} ⟶ 2 K C l + I_{2}

I_{2} + 2 N a_{2} S_{2} O_{3} ⟶ N a_{2} S_{4} O_{6} + 2 N a I

N a_{2} S_{2} O_{3}

I_{2}

127

C a O C l_{2}

50 %

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