Answer:
The correct answer is - arrange yellow and blue in the center as proton and neutron while red as electrons revolving in a different shell.
Step-by-step explanation:
The carbon atom has 6 protons and 6 neutrons present in the nucleus of the atom while 6 electrons present in the shell. The inner shell has two and the outer most shell has 4 electrons.
One can represent all three color balls as an electron, proton, and neutron to model the carbon atom.