Which of the following is not considered to be a lewis base

[From: ] [author: ] [Date: 12-04-04] [Hit: ]

a) H2O
b) NH3
c) NH4^+
d) Cl^-
I picked c) because it looks like a lewis acid so it's able to accept electrons, I'm I right?

right C is a Lewis acid

GN Lewis was a chemiCAL prof at UC Berkeley

keywords: of,base,following,not,is,to,lewis,the,be,considered,Which,Which of the following is not considered to be a lewis base