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NTA Abhyas NEET2020ChemistryAminesPractice

Which of the following will be most stable diazonium salt R N 2 + X - ?

Options

  1. AC H 3 C H 2 N 2 + X -
  2. BC 6 H 5 N 2 + X -
  3. CC 6 H 5 C H 2 N 2 + X -
  4. DC H 3 N 2 + X -

Correct answer

B. C 6 H 5 N 2 + X -

Step-by-step solution

Primary aliphatic amines form highly unstable alkyl diazonium salts. Primary aromatic amines form arene diazonium salts which are stable for a short time in solution at low temperature (273 – 278 K). The stability of arene diazonium can be explained on the basis of resonance.

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