Certain gases are called "noble gases" because they are inert (chemically inactive and stable.)" />
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Noble

Chemically unreactive, especially toward oxygen or resists chemical action such as corrosion caused by air, water, or (to a lesser degree) acids.

Gold, silver, platinum, palladium, and mercury are said to be "noble metals" because they don't rust and are resistant to acid damage.

Certain gases are called "noble gases" because they are inert (chemically inactive and stable.)