Which group of elements has seven valence electrons?
a) the carbon family b) the halogens c) the halogens d) the noble gases

The answer is -

Halogens, the elements in the family are fluorine, chlorine, bromine, iodine, and astatine.

They each have 7 valence electrons hence the reason they're the most active non-metals

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air quality

poor drinking water

and heavy polution

can lead to poor health

i would say b

explanation:

but i think i would need more information than that