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Which of the following statements about $B F_{4}^{-}$ and $A l F_{6}^{3 -}$ are correct.
(a) B and Al differ in their oxidation states.
(b) B, Al differ in their covalency
(c) B obeys octet rule
(d) B, Al are in diagonal relationship

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$a, b$

$b, c, d$

$a, b, c$

$b, c$

answer is D.

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Detailed Solution

Covalency of B = 4

Covalency of Al = 6

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