1. DRAWING ATOMIC MODELS

2. Element Name Atomic Mass
Before We Begin….
Atomic Number
Atomic Symbol
Element Name
Atomic
Mass

3. In an Atom……
Protons and Neutrons are located in the nucleus of an atom
Electrons are found outside of the nucleus in the orbital rings
Protons are equal to the atomic number
Electrons are also equal to the atomic number
Neutrons are found by subtracting your atomic number from your atomic mass

4. How Many Electrons in Each Orbital?
1st orbital = 2 electrons
2nd Orbital = 8 Electrons
3rd Orbital = 18 Electrons
4th Orbital = 32 Electrons

5. REMEMBER!!!
The LOWER orbital MUST be full before you start filing the higher orbitals
(ex) The 1st orbital MUST have two electrons in it BEFORE you start filling the 2nd orbital

6. LET’S
PRACTICE!!!

10. REVIEW ACTIVITY