Question

Which of the following species cannot act as a Lewis base?
O2–
A)
OH–
B)
C)
CH4
D)
H2S
E)
NH3

Answer 1

Answer:

O2 , CH4, H2S

Explanation:

all of three element do not give your electron to acid

Answer 2

(c) CH4 cannot act as a Lewis base

- Lewis base is the compound which can donate atleast 1 lone pair of electrons.

(a) O2- can donate electrons, hence it is a lewis base.

(b) OH- can donate electrons, hence it is a lewis base.

(c) CH4 does not have any lone pair, so it is not a Lewis base.

(d) H2S has two lone pairs on the S atom, so it can also act as a Lewis base.

(e) NH3 has one lone pair on the N atom, so it can also act as a Lewis base.