A certain rock has a mixture of several different elements. It contains 33g of zinc, 22g of iron and 16g of oxygen. What percentage of the rock, by mass, is zinc?

- both b and d.

-since b and d are the closest coastlines then that makes it the most affected.

< 3

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.