Nucleon, Mass, and Atomic number

[Flavia]

What is differences between the definition of..

Nucleon number, atomic number, and mass number.

Is there any differences as i knew that those three symbol is A. am I right?

 

[Andrew Mason]

What is differences between the definition of..

Nucleon number, atomic number, and mass number.

Is there any differences as i knew that those three symbol is A. am I right?

Nucleon number and mass number are the same ie. the number of protons and neutrons in the nucleus. Atomic number is the number of protons only.

AM