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JEE Main2014Chemistryp Block Elements (Group 13 & 14)Actual

Which of these statements is not true ?

Options

  1. ALiAlH 4 is versatile reducing agent in organic synthesis.
  2. BNO + is isoelectronic with O 2
  3. CBoron is always covalent in its compounds
  4. DIn aqueous solution, the Tl + ion is much more stable than Tl (III)

Correct answer

B. NO + is isoelectronic with O 2

Step-by-step solution

(i) LiAlH 4 is a versatile reducing agent (ii) NO + (14 electrons), O 2 (16 electrons) not isoelectronic (iii) ​Tl + is more stable due to Inert pair effect (iv) Boron compounds are ionic as well B 2 O 3 + 2 NaOH → 2 NaBO 2 + H 2 O (Sodium meta Borate)

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