whats the connection/relationship between the # of protons in the nucleus of an atom & and atomic # of the element?

The atomic number tells you the number of protons in the nucleus of the atom.
The atomic number is the number of protons in the nucleus of an atom. The number of protons in an atom's nucleus determines the chemical identity of that atom. It tells us which element it is.

Please add any other information and correct me if I'm wrong, thanks.

It is correct.

thank you

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You're correct! The atomic number of an element represents the number of protons in the nucleus of an atom of that element. Every element in the periodic table has a unique atomic number, which determines its position in the periodic table and its chemical properties.

Additionally, it's important to note that the number of protons in an atom is equal to its atomic number, but it is not equal to the total number of particles in the atom. An atom may also contain neutrons and electrons. However, it is the number of protons that primarily determines the identity of the element.

If you would like to find the atomic number of an element, you can refer to a periodic table. The atomic number is usually displayed above or below the element's symbol on the table. You can locate the element you are interested in and directly read off its atomic number from the table.

Let me know if you have any further questions or need clarification on anything else!