Respuesta :
Answer:
Option A, It has two elements
Explanation:
The word binary indicates that a substance consists of two elements. Thus any binary compounds must consists of two different elements. A binary compound may consists of single , double or triple bond. These compounds may be ionic or covalent compound .
Some common examples of binary compound are –
a) NaCl
b) N2O
c) MgO
d) KI
Hence, under any circumstance a binary compound consists of two different element.