State strong lewis acids and not lewis bases

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NF3, OF2 and SF4 could all be expected to behave as Lewis Bases given their lone pairs on the central atoms, however, none of them actually are. Why are OF2 and SF4 are strong Lewis Acids and not Lewis Bases

Reference no: EM13209848

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State strong lewis acids and not lewis bases : Lewis Bases given their lone pairs on the central atoms, however, none of them actually are. Why are OF2 and SF4 are strong Lewis Acids and not Lewis Bases
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