Answer:
3. An oxygen atom with 8 electrons, 8 protons, and 9 neutrons .
Explanation:
if an atom contains equal numbers of protons and electrons, the atom is described as being neutral.
13 are the number of atoms
10.4g
Explanation are in the Picture
The answer is B...
because any of the others could have an opinion based answer but B will always be the same its a fact not opinion.
