Answer:
Halogens family
Explanation:
Be familiar with the periodic table
The answer would be B fossil fuel is used it cars so increasing human population therefore would increase the burning of fossil fuels
<span>Find a periodic table of elements. ... <span>Label each column on the periodic table of elements from 1 to 18. ... </span><span>Find your element on the table. ... </span>Use the group numbers to determine the number of valence electrons. </span><span>imgres</span>
