Noble gases are supposed to be the least reactive elements so I’m assuming Neon would be the most least reactive out of all of them.
Answer:c which is 70
Explanation:
i took the test and got it right
2 shells because if you do the electronic configuration:
2,7 which adds up to 9
7 stands for the group it in and it also stands for how many electrons are in the outer shell.
the amount of spaces stands for which period its in therefore it in period 2
Answer:
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