Question

which of the following falls under compound​

Answer 1

Answer:

A compound is mixture of elements and molecules ,

Iron - element

Hydrogen - element

CO

2

- compound

Air - mixture

Oxygen - element

Answer 2

Water is a compound. A compound forms whenever two or more atoms form chemical bonds with each other. The chemical formula for water is H2O, which means each molecule of water consists of one oxygen atom chemically bonded to two hydrogen atoms. Thus, water is a compound.