Which of these statements is not true ?

Options

ALiAlH₄ is versatile reducing agent in organic synthesis.
BNO⁺is isoelectronic with O₂
CBoron is always covalent in its compounds
DIn aqueous solution, the Tl⁺ ion is much more stable than Tl (III)

Correct answer

B. NO⁺is isoelectronic with O₂

Step-by-step solution

(i) LiAlH₄ is a versatile reducing agent
(ii) NO⁺ (14 electrons), O₂(16 electrons) not isoelectronic
(iii) Tl⁺is more stable due to Inert pair effect
(iv) Boron compounds are ionic as well

{\text{B}}_{2} {\text{O}}_{3} + 2 NaOH \to 2 {NaBO}_{2} + {\text{H}}_{2} \text{O}

(Sodium meta Borate)

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