Question

Which of the following is a binary compound?
K2SO4
Ni(OH)2
BaCO3
Mn2O7

Answer 1

the answer is either b or d .

Answer 2

Answer : The correct option is, (D)
`Mn_2O_7`

Explanation :

Binary ionic compound : It is a type of compound that is made up of the ions of the two different elements in which one element is a metal and another element is a non-metal. It is only made up of two elements.

From the given options, option (A)
`Mn_2O_7` is a binary ionic compound because in this compound Mn is a metal which combine with the an oxygen non-metal element.

While the other options are not a binary compound because it is made up of more than two elements.

Hence, the
`Mn_2O_7` is a binary ionic compound.