Identify the incorrect statement about hydrogen. 

• A. Hydrogen exists as a diatomic gas in its natural state.
• B. Metallic hydrides are formed with the reaction of hydrogen and alkali metals.
• C. Hydrogen is the most abundant gas in the earth's atmosphere.
• D. Hydrogen is primarily used in the industry for manufacturing ammonia through the Haber process
• E. Hydrogen can act as an oxidizing agent resembling halogen ions.
• F. The reaction of methane with steam is the most common method of producing hydrogen gas in the U.S.

Answer: (C)