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Reactivity with Halogens and Hydrogen (Group 2)

A light green...

Question

A light green colored salt soluble in water gives black precipitate on passing $H_{2} S$ which dissolves readily in $H C l$ . The metal ion present is :

A

C o^{2 +}

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B

F e^{2 +}

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C

N i^{2 +}

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D

A g^{+}

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Solution

The correct option is A $F e^{2 +}$
Option (B) is correct.
The metal ion present is $F e^{2 +}$ .
$F e S$ is soluble in $H C l$ . Also $F e^{2 +}$ salts are green.

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