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A black compound of manganese reacts wit...

A black compound of manganese reacts with a halogen acid to give greenish yellow gas. When excess of this gas reacts with `NH_(3)` an unstable trihalide is formed. In this process the oxidation state of nitrogen changes from

A

`-3 " to " + 3`

B

`-3 " to " 0`

C

`-3 " to " + 5`

D

`0 " to " -3`

Text Solution

Verified by Experts

The correct Answer is:
A
`underset("(Black)") + 4HCl rarr MnCl_2 + 2H_2O + underset("(Greenish yellow gas)")(Cl_2) : overset(-3)(NH_3) + 3Cl_2 rarr overset(+ 3 -1)(NCl_3) +3HCl`
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ICSE-P-BLOCK ELEMENTS-EXERCISE (PART-I)(OBJECTIVE QUESTIONS)(THE CORRECT ALTERNATIVE FROM THE CHOICES GIVEN : )
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