Covalent Bonds

Covalent Bonds Covalent bonds occur when atoms share electrons. Covalent bonds generally form between nonmetals. Atoms that are covalently bonded form molecules.

Covalent Bonds Covalent bonds occur at unpaired valence electrons on the outer shell for each atom. Example: H2O has 2 bonds: Before… After… H O H O H H

Covalent Bonds Covalent bonds create neutral molecules when they come together. Diatomic atoms (only exist in pairs): Cl2 S2 O2 H2 F2 Br2 N2 I2

Covalent Bonds Properties of Covalent Bonds: Low melting points Low boiling points Poor conductor of electricity Between nonmetals and nonmetals

Sharing of electrons