Atomic Structure
1. What is an Atom? An atom is the smallest particle of an element that retains the properties of that element. 2. Subatomic Particles Particle Symbol Relative Mass Relative Charge Location Proton p⁺ 1 +1 Nucleus Neutron n 1 0 Nucleus Electron e⁻ 1/1836 -1 Orbitals/Shells 3. Atomic Number (Z) and Mass Number (A) Example: […]