Carbon which has six protons,electrons but may not have six neutrons because to determine the number of neutrons you need to know the atomic number(i.e number of protons/electrons) and the mass number.
Neutron number=Mass number-Atomic number
The same applies to oxygen.
Carbon dioxide and oxygen have different atomic numbers.
The number of protons in an atom's nucleus, which is a chemical element's defining feature and determines its position in the periodic table is called as the atomic number.
Each kind of atom has a different number of the three particles. Protons and neutrons are in the center, or nucleus, of the atom. Carbon has an atomic number of 6. That means a carbon atom has 6 protons, 6 neutrons, and 6 electrons. Oxygen has eight protons, eight neutrons, and eight electrons. Oxygen is different from carbon because it has more particles.
Learn more about atomic number here:
https://brainly.com/question/8834373
#SPJ2
