Question

Which of the following is a binary compound?
a. o₂₋
b. nh₄
c. h₂so₄
d. cao

Answer 1

CaO is the binary compound among the given options.

Step-by-step explanation:

The binary compound among the given options is CaO. CaO is formed by the combination of calcium (Ca) and oxygen (O) atoms.

It is an ionic compound where one calcium atom (cation) donates two electrons to one oxygen atom (anion), forming a stable compound.