Which gas in dry air has the chemical symbol Ar?

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Prepare for the IGCSE Edexcel Chemistry Test with engaging flashcards and multiple-choice questions. Each question comes with detailed hints and explanations to enhance your learning experience. Master your exam with confidence!

Multiple Choice

Which gas in dry air has the chemical symbol Ar?

Explanation:
Argon is the gas with the symbol Ar. It’s a noble gas, very unreactive, and it makes up a small fraction of dry air—about one percent. The symbol Ar comes from its name, Argon. Other gases in air include nitrogen (symbol N or N2), oxygen (symbol O or O2), and carbon dioxide (symbol CO2), so none of them have the symbol Ar. This is why Argon is the correct gas associated with the symbol Ar.

Argon is the gas with the symbol Ar. It’s a noble gas, very unreactive, and it makes up a small fraction of dry air—about one percent. The symbol Ar comes from its name, Argon. Other gases in air include nitrogen (symbol N or N2), oxygen (symbol O or O2), and carbon dioxide (symbol CO2), so none of them have the symbol Ar. This is why Argon is the correct gas associated with the symbol Ar.

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