CO2 does not have an atomic number as it is a compound. Only elements have atomic numbers.
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Carbon dioxide (CO2) does not have an atomic number because it is a compound, not an element. The atomic number refers to the number of protons in the nucleus of an atom of an element. Carbon (C) has an atomic number of 6.
The atomic number of fluorine is 9.The atomic number of sodium is 11.
An example of atomic number is 8, which corresponds to oxygen. The atomic number represents the number of protons in an atom's nucleus.
The atomic number is equal to number of protons in the atomic nucleus.
Protons are equal to the atomic number of an element.
We get the number of neutrons. Atomic number is the number of protons, and atomic mass is protons plus neutrons.