Atomic Structure Models

1
Atomic Structure Models
2
Daltons Atomic Model

• Solid sphere
• Evidence
• Conservation of matter
• Law of definite composition
• Law of multiple proportions

3
Thomson Plum Pudding

• Based on the discovery of the electron
• Evidence
• Cathode Ray Experiment
• Deflection by magnetic fields and electric fields
• Charge to mass ratio of electrons
• Big Charge Little mass
• Atoms are composed of electrons and something
  positive

4
Rutherford

• Nuclear Model
• Evidence Gold Foil Experiment
• Most Some Few
• Mostly Empty Space
• Dense Positively Charged Central Portion
• Electrons outside the nucleus
• Nucleus and Empty Space

5
Bohr

• Orbits
• Energy Levels
• Evidence
• Flame tests, neon lights, LED, fluorecent
• Emission Spectrums
• Wave and Particle Properties of Light
• Energy transitions absorption and release of light

6
1s1 orbital
7
1s2 orbital
8
1s22s1
9
1s22s2
10
1s22s2 2px1
11
1s22s2 2px1 2py1
12
1s22s2 2px1 2py12pz1
13
1s22s2 2px2 2py12pz1
14
1s22s2 2px2 2py22pz1
15
1s22s2 2px2 2py22pz2
16
1s22s2 2px2 2py22pz23s1
17
1s22s2 2px2 2py22pz23s2

• Quantum, Orbitals,Wave Mechanical Model
• Flame tests, Neon Lights, LED,fluorescence
• Wave and Particle Properties
• Orbitals Energy Levels
• Orbital size, shape orientation
• Probability regions of space
• Electron Configurations
• Predict shapes of molecules
• Predict chemical behavior chemical bonding