'The mass of any 1 proton is about equal to the mass of one atom of this element'
hydrogen
SUBATOMIC MASS PERSUASION: The mass of any 1 proton is about equal to the mass of one atom of this element
The mass of any 1 proton is about equal to the mass of one atom of this element
The mass of any 1 proton is about equal to the mass of one atom of this element
SUBATOMIC MASS PERSUASION
hydrogen
SUBATOMIC MASS PERSUASION