$C r O_{2} C l_{2}$ is formed while testing:

N O_{3}^{-}

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C l^{-}

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C r^{3 +}

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F e^{3 +}

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Solution

The correct option is B $C l^{-}$
Hence, the correct option is $B$ .

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Question 14

The pair of ions having same electronic configuration is.............

(a) $C r^{3 +}, F e^{3 +}$ (b) $F e^{3 +}, M n^{2 +} +$ (c) $F e^{3 +}, C o^{3 +}$ (d) $S C^{3 +}, C r^{3 +}$

The oxidation half reaction for following reaction is

Fe²⁺(aq) + Cr₂O₇^2-(aq) → Fe³⁺ (aq) + Cr³⁺(aq)

T i^{3 +}, V^{3 +}, F e^{3 +}

C o^{2 +}

C r^{3 +}

{C r}_{2} O_{7}^{2 -} + {F e}^{2 +} ⟶ {F e}^{3 +} + {C r}^{3 +}

C r_{2} O_{7}^{2 -} + F e^{2 +} + H^{+} \to C r^{3 +} + F e^{3 +} + H_{2} O

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