Which of the following species cannot act as a Lewis acid? A)BeCl₂ B)H⁺ C)Ag⁺ D)BF₃ E)NH₄⁺

Question

Quizplus · Accepted Answer

Lewis acids are species that can accept a pair of electrons. A Lewis acid must have an empty orbital or be able to expand its valence shell to accommodate new electrons. In the case of $ \text{NH}_4^+ $ (E), it does not have an empty orbital nor can it expand its valence shell to accept more electrons, as it already has a complete octet around the nitrogen atom. All other options listed have the capacity to accept electrons either by having empty orbitals or by being able to expand their valence shells.

Which of the Following Species Cannot Act as a Lewis