Balance the following chemical equation:
(?)Fe + (?)H2O > (?)Fe3O4 + (?)H2

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.

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter