Dalton discovered that all compounds are made of A)molecules
B)other compounds
C)Earth, wind, fire, and water
D)elements

What semimetal can form four single covalent bonds.

Compare sympathetic and parasympathetic

Which of the following is not a characteristic of a hydrogen bond? 1. it is responsible for the unusual physical properties of water. 2. it is weaker than a covalent bond. 3. it is stronger than other dipole-dipole interactions. 4. it can occur when hydrogen is covalently bound to very electronegative elements liks f, cl, br and i.