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Question: Answered & Verified by Expert
Which one of the following statements is not correct?
Chemistryp Block Elements (Group 13 & 14)JEE Main
Options:
  • A Moissan boron is amorphous
  • B The reaction between boron and concentrated $\mathrm{HNO}_3$ gives $\mathrm{N}_2 \mathrm{O}$
  • C Amorphous boron on heating with oxygen forms $\mathrm{B}_2 \mathrm{O}_3$
  • D Boron is a non-conductor of electricity
Solution:
2516 Upvotes Verified Answer
The correct answer is: The reaction between boron and concentrated $\mathrm{HNO}_3$ gives $\mathrm{N}_2 \mathrm{O}$
Boron reacts with concentrated $\mathrm{HNO}_3$ to give orthoboric acid and nitrogen dioxide.
$\mathrm{B}+3 \mathrm{HNO}_3 \longrightarrow \mathrm{H}_3 \mathrm{BO}_3+3 \mathrm{NO}_2$

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