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JEE Advanced2014Chemistryp Block Elements (Group 15, 16, 17 & 18)Actual

The pair(s) of reagents that yield paramagnetic species is/are

Options

  1. ANa and excess of N H 3
  2. BK and excess of O 2
  3. CCu and dilute H N O 3
  4. DO 2 and 2- ethylanthraquinol

Correct answer

A. Na and excess of N H 3

Step-by-step solution

A] sodium (Na) when dissolved in excess liquid ammonia, forms a blue coloured paramagnetic solution. B] C] Where "NO" is paramagnetic. D]

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