If the coefficient 2 is placed in front of the product tetraiodine nonaoxide (I4O9), then, how many atoms of each element must be accounted for on the other side of the equation?
8 iodine atoms and 18 oxygen atoms
4 iodine atoms and 9 oxygen atoms
8 iodine atoms and 9 oxygen atoms
9 iodine atoms and 4 oxygen atoms
18 iodine atoms and 9 oxygen atoms