No, two different atoms cannot have the same atomic number. The atomic number of an atom is a unique identifier for each element, and it represents the number of protons in the nucleus of an atom. Since different elements have a different number of protons, their atomic numbers will also be different.
For example, hydrogen has an atomic number of 1 because it has one proton in its nucleus. Carbon has an atomic number of 6 because it has six protons in its nucleus. Oxygen, as mentioned earlier, has an atomic number of 8 because it has eight protons. Each element has its own specific atomic number, allowing us to differentiate between different elements on the periodic table.
While atoms of the same element can have different numbers of neutrons, resulting in different isotopes, the atomic number remains the same for all atoms of that element. Isotopes are distinguished by their mass numbers, which represent the total number of protons and neutrons in an atom's nucleus.