1. Structure of the Atom
Describe the structure and arrangement of atomic particles.
Characterize and classify elements based on their atomic structure.

2. Protons, Neutrons, Electrons
In the nucleus
Positively charged
1.674 x 10-27kg
Neutrons
No charge
1.675 x 10-27kg
Electrons
Around the nucleus
Negative charge
9.11 x 10-31kg

3. Atomic Number and Mass Number
Equals the number of protons
Different elements have different atomic numbers
Neutral atoms
Same number of protons and electrons
Mass Number
Atomic number plus the number of neutrons
Atomic Mass
Actual mass of the element

4. Isotopes Same atomic number but different mass number
i.e. different amount of neutrons
Same number of electrons

5. Atomic Number Practice
Number of protons
Number of neutrons
Number of electrons

6. Atomic Orbitals Orbital Electron Configuration Ground State
Where an electron most likely will be found
Electron Configuration
Arrangement of electrons in an atom
Ground State
Lowest possible energy

7. Orbital Practice