Chapter 2 - Atomic and Electronic Structure

What does the Aufbau principle state?

Orbitals must be filled from lowest to highest energy

What does Hund’s rule state?

Electrons do not share orbitals until they are required to do so

What does the Pauli exclusion principle state?

No two electrons in the same atom can have the same four quantum numbers

What are the transition metal exeptions for the aufbau principle?

• Chromium (Cr)

• Molybdenum (Mo)

• Copper (Cu)

• Silver (Ag)

• Gold (Au)

How to calculate wavelength?

Electromagnetic spectrum

Radiowaves

Microwaves

Infrared
Visible light
Ultraviolet
X-ray
Gamma Rays

What is the mnemonic to help Farida remember the electromagnetic spectrum?

Roman men invented very unsual x ray g*ns

Energy of an individual photon can be calculated using….

What is the speed of light equal to?

3.0 ✕ 10⁸ meters / second

What is plancks constant?

6.63 ✕ 10⁻³⁴ joules · secondsa

As energy increases, what happens to the frequency and wavelength?

Frequency increases
Wavelength decreases

1nm = how many meters?

10⁻⁹ meters