. What sets gases such as argon and neon apart from other elements?

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1 point
They are unwilling to mix or react with other elements
They can be used to make signs
They are difficult to store in a container

1 answer

The primary characteristic that sets gases such as argon and neon apart from other elements is:

They are unwilling to mix or react with other elements.

This is due to their status as noble gases, which have full valence electron shells, making them very stable and chemically inert. While they can certainly be used to make signs (e.g., neon lights) and can be stored in containers, their lack of reactivity is the most defining feature.