Question

Which is not a binary compound?

H2O

NaCl

NaOH

CH4

Answer 1

NaOH is not a compound because it contains three instead of two.

Answer 2

Answer:
`NaOH`

Explanation: Binary compound is a substance composed of exactly two different elements.

`H_2O` is a binary compound as it is made up of hydrogen and oxygen atoms.

`NaCl` is a binary compound as it is made up of sodium and chlorine atoms.

`NaOH` is a not a binary compound as it is made up of three different elements i.e sodium, oxygen and hydrogen.

`CH_4` is a binary compound as it is made up of carbon and hydrogen atoms.