CHM 1020 Exam 2

Alkali Metals

Group 1.

Alkaline Earth Metals

Group 2

Chalcogens

Group 6

h

Planck’s: 6.63×10^-34 J⋅s

Halogens

Group 7

Kinetic Energy

½mu²

λ, v, c

Wavelength, Frequency, Speed of light

Find frequency using wavelength

c = λv

The energy of a single quantum

E = hv

Maximum kinetic energy of photon ejected / binding energy

hv = Ek + W

Rydberg Equation

1/λ = R_∞((1/n₁²) - (1/n₂²))

Where n2>n1, R_∞=1.097 × 10^7

De Broglie Equation

λ=h∕mu

Heisenberg Uncertainty Principle

It’s impossible to know both the momentum and position of a particle with certainty.

When n is X, l is

0:(x-1)

When l is X, m_l is

∓X : ±X

n

size of the orbital

l

shape of the orbital

m_l

orientation of the orbital

m_s

spin of the orbital

Pauli Exclusion Principle

No two electrons in an atom can have the same four atomic numbers

Aufbau Principle

Electrons are added to the lowest energy orbitals first before moving to higher energy orbitals

Hund’s Rule

Most stable arrangement of electrons is when the number of electrons with the same spin is maximized

Paramagnetic

When there are 1+ unpaired electrons in an atom.

Diamagnetic

When all electrons in an atom are paired.

Electron Configuration

1s2s2p3s3p4s3d4p5s4d5p6s4f