Calcular la masa obtenida de Hierro (Fe) partiendo de 50g de Hidrógeno (H2)

Which of these statements describes the size of an atom? a. an atom is larger than a sheet of aluminum foil. b. an atom is small but can be seen with just our eyes. c. an atom is the size of a plastic building block. d. an atom is tiny and cannot be seen without magnification.