Question

which one is not a lewis acid? (a) AlCl3 (b) BF3 (c) NH3 (d) FeCl3​

Answer 1

Answer –

c) NH3

Explanation –

because it is a Lewis base .

Answer 2

Answer:

OPTION (c) $NH_{3}$

Explanation:

• Lewis acid is an atom that has an incomplete octet.
• It is willing to accept an electron pair from any donor compound.
• Lewis acid can also be termed as an electron-deficient group because it can easily accept electrons.
• Some examples of lewis acid are cations like $Cu^{+2} , Zn^{+2} , Fe^{+2} , Fe^{+3}$ and so on.
• $AlCl_{3} , BF_{3} ,$ and $FeCl_{3}$ are also examples of lewis acids.
• On the other hand, $NH_{3}$ is a lewis base.

Hence, $NH_{3}$ is not a lewis acid.

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