Except for water, almost all of the compounds in your body contain atoms of _________.
When your breathe, what two non metals make up most of the gas that you breathe in?
Group 17 elements often combine with elements from what group? ___________.
Hint: Group 17 elements have 7 valence electrons, so they need one more electron to become stable. Which groups elements have only one valence electron?
When your breathe, what two non metals make up most of the gas that you breathe in?
Group 17 elements often combine with elements from what group? ___________.
Hint: Group 17 elements have 7 valence electrons, so they need one more electron to become stable. Which groups elements have only one valence electron?