1.40 Explain, using dot and cross diagrams, the formation of covalent compounds by electron sharing for the following substances...

Here are dot and cross diagrams to represent the covalent bonds between the following substances:

• Hydrogen
• Chlorine
• Hydrogen chloride
• Water
• Methane
• Ammonia
• Oxygen
• Nitrogen
• Carbon dioxide
• Ethane
• Ethene

This website covers hydrogen, chlorine, hydrogen chloride, water, methane ammonia, and oxygen.

The rest can be found here (quizlet) or click on the "Formulas 1.40" page on the right side ^_^