Boron cannot form which one of the following | vedclass

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(A) Boron belongs to the second period and has a valence shell configuration of $2s^2 2p^1$. It lacks $d$-orbitals in its valence shell,which limits i

Vedclass · Accepted Answer

$BF_6^{3-}$

Vedclass · Answer

(A) Boron belongs to the second period and has a valence shell configuration of $2s^2 2p^1$. It lacks $d$-orbitals in its valence shell,which limits its maximum covalency to $4$. Therefore,boron cannot expand its octet to form $BF_6^{3-}$ because it would require a coordination number of $6$ and the presence of $d$-orbitals to accommodate the extra electrons.

Boron cannot form which one of the following anions?

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