If a compound name the elements oxygen
argon
carbon Dioxide
Neon
Helium
Sulfur dioxide
methane
hydrogen
nitrous oxide
iodine
carbon monoxide
ammonia

Answer/Explanation:

Oxygen - element

argon - element

carbon Dioxide - compound: carbon and oxygen

Neon - element

Helium - element

Sulfur dioxide - compound: sulfur and oxygen

methane - element

hydrogen - element

nitrous oxide - compound: nitrogen and oxygen

iodine - element

carbon monoxide - compound: carbon and oxygen

ammonia - compound: nitrogen and hydrogen

Hope this helps!

the answer is option a.

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