1. Ionic Bonds: These bonds form when one atom (the more electronegative one) completely takes an electron from another atom. This creates oppositely charged ions (cations and anions) that attract each other through electrostatic forces. This results in a strong bond. Examples include NaCl (table salt) and CaCl2 (calcium chloride).
2. Covalent Bonds: These bonds form when atoms share electrons. This sharing can be equal (nonpolar covalent bond) or unequal (polar covalent bond) depending on the electronegativity difference between the atoms. These bonds are typically stronger than ionic bonds. Examples include H2 (hydrogen gas) and H2O (water).
3. Metallic Bonds: These bonds occur in metals where the valence electrons are delocalized and move freely throughout the entire metal lattice. The positive metal ions are held together by a sea of these mobile electrons. This results in a strong bond and explains many of the properties of metals, such as their high conductivity and malleability. An example is copper (Cu).
Let me know if you'd like more details on any of these bond types!
