Which particle in an atom tells you the atomic number?

can you make it bigger i can't see it

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.