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AIIMS 201826 May
Exam
AIIMS
Year
2018
Date
26 May
Subject
Chemistry
Chapter
p Block Elements (Group 15, 16, 17 & 18)

AIIMS 2018 · 26 May · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

Which of the following is true for N_2 O_5 ?

Which of the following is true for N2O5\mathrm{N}_2 \mathrm{O}_5 ?

Options

  1. AIt is paramagnetic.
  2. BIt is an anhydride of HNO2\mathrm{HNO}_2.
  3. CIt is a brown gas.
  4. DIt exists in solid state in the form of $\left[\mathrm{NO}_2^{+}\right]\left[\mathrm{NO}_3^{-}\right]

Correct answer

D. It exists in solid state in the form of $\left[\mathrm{NO}_2^{+}\right]\left[\mathrm{NO}_3^{-}\right]

Step-by-step solution

N2O5\mathrm{N}_2 \mathrm{O}_5 is diamagnetic in nature. It is an anhydride of HNO3\mathrm{HNO}_3. It exists as colourless solid below 273 K273 \mathrm{~K}. N2O5\mathrm{N}_2 \mathrm{O}_5 exists as NO2+NO3−\mathrm{NO}_2^{+} \mathrm{NO}_3^{-}in solid form.
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