Answer:
C. Two oxygen atoms
General Formulas and Concepts:
Types of Bonds
- Covalent Bonds - forms between 2 non-metals
- Ionic Bonds - forms between a non-metal and a metal
- Metallic Bonds - forms between 2 metals
Explanation:
Any metal forming a compound with an non-metal is an ionic bond. Therefore, A and D are incorrect.
- Fe (Iron) is a Transition Metal forming an ionic bond with O (Oxygen), a non-metal.
- Na (Sodium) is a Alkali Metal forming an ionic bond with Cl (Chlorine), a non-metal.
Any 2 metals forming bonds with each other is a metallic bond. Therefore, B is incorrect.
- Na forms a metallic bond with Na.
Any 2 non-metals forming bonds with each other is a covalent bond. There are 2 types of covalent bonds: non-polar and polar.
- O forms a covalent bond with O.
Therefore, our answer is C.
