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Among the properties: (a) reducing, (b) oxidising and (c) complexing, the set of properties shown by CN− ion towards metal species is

1. c, a
2. b, c
3. c, a, b
4. a, b

Correct answer: c, a

Solution

The CN− ion acts as a complexing agent by forming stable complexes with metal ions, and it also exhibits reducing properties by donating electrons. However, it does not typically function as an oxidizing agent.

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