Answer:
1. H₂O is covalent compound because the elements involved are all non metals.
It is formed by 2 hydrogen atoms and 1 oxygen atom.
2.CO₂ is covalent compound because the elements involved are all non metals. It is formed by 1 carbon atom and 2 oxygen atoms.
3.NH3is covalent compound because the elements involved are all non metals. It is formed by 1 nitrogen atom and 3 hydrogen atoms.
4.SO2 is covalent compound because the elements involved are all non metals. It is formed by 1 sulfur atom and two oxygen atoms.
5.BaCI2 is an ionic compound since it formed by a metallic element and a nonmetallic element.
It is formed by 2 Barium atom which is a metallic element and 2 chlorine atoms, which is a metallic element.
