A) \[N{{O}^{+}}\]is not isoelectronic with\[{{O}_{2}}\]
B) B is always covalent in its compounds
C) In aqueous solution, the \[T{{l}^{+}}\] ion is much more stable than Tl (III)
D) \[LiAl{{H}_{4}}\]is a versatile reducing agent in organic synthesis.
Correct Answer: A
Solution :
\[N{{O}^{+}}=7+8-1=14{{e}^{-}}.\] \[{{O}_{2}}=16{{e}^{-}}\]i.e not isoelectronic (b) Boron forms only covalent compounds. This is due to its extremely high ionisation energy. (c) Compounds of \[T{{l}^{+}}\] are much more stable than those of \[T{{l}^{3+}}.\] (d) \[LiAl{{H}_{4}}\]is a versatile reducing agent in organic synthesis
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