Chemistry - Atomic Structure - Atomic number and mass number - Calculate and Identify

10 problems combining atomic number and mass number calculations. Each problem gives some information and asks for the rest. P1: 'Element X has 11 protons and 12 neutrons. Atomic number = ___. Mass number = ___. Element name = ___' (11, 23, Sodium). P2: 'Element Y has atomic number 17 and mass numbe