Question

What quality do all of the elements in group 18, the noble gases, share?(1 point)
Responses

They are all highly reactive.
They are all highly reactive.

They all have the same number of protons in their nucleus.
They all have the same number of protons in their nucleus.

They all have a full outer valence shell.
They all have a full outer valence shell.

They all have 8 valence elections.
GPT-4o mini
The correct response is:

**They all have a full outer valence shell.**

Noble gases have complete outer electron shells, which is why they are generally unreactive.

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