Answer:
C. Ca₃N₅
Explanation:
A bond between a metal and a non-metal is called an ionic bond. The bond that occurs between two non-metals is called a covalent bond.
Let us check each option and determine the nature of the bond.
A. C₂H₆
This contains 2 carbon atoms and 6 hydrogen atoms. Both carbon and hydrogen are non-metals. So, a covalent bond exists between them
.
B. PCl₅
This contains 1 phosphorus and 5 chlorine atoms. Both phosphorus and chlorine are non-metals and hence, a covalent bond exists between them
.
C. Ca₃N₅
It has 2 calcium atoms and 5 nitrogen atoms. Here, calcium is metal and nitrogen is a non-metal. Hence, an ionic bond occurs between them.
D. SF₂
It has 1 sulfur and 2 fluorine atoms, both of them being non-metallic. So, covalent bonds are there between them.
From all the options, only option C has an ionic bond. So, option C is correct.
