1. Matter waves & Orbitals
Chapter
Matter waves & Orbitals

2. Matter Wave λ = h /(mν) λ  wavelength
h  6.63 x 10–34 J • s; 1 J = 1 Kg-m2/s2
m (mass)  Kg
ν (velocity)  m/s
Each moving object has a wavelength
Problem 44, Pg. 254

3. Uncertainty Principle
It is impossible to know both the location and momentum (momentum = mass x velocity) of an object at the same time.

4. Uncertainty Principle contd
∆x. ∆(mv) = constant
When uncertainly in momentum (∆mv) is smaller, uncertainty in position (∆x) is larger
This gives e probability distribution
(Figure on the right)

5. Principal quantum number, n
Azimuthal quantum number ℓ
For 1e atoms & ions
H, He+, Li2+, etc.

6. Problem 51 (p255)

8. Shapes of orbitals
S orbital : Spherical 1s 2s

10. Supplement.
Problem 6.9