Physicists

Planck
explained atomic emission spectra; E=hv
Bohr

  1. e- travel circular paths (orbits) around nucleus
  2. e- have fixed amount of energy; e- located at certain energy levels

student of Rutherford; Danish physicist

one e- system: Atomic Emission Spectrum of H atom

Lyman
Spectral lines: set of wavelengths e- goes to n=1, UV light given off
Balmer
e- goes to n=2, visible light given off
Paschen
e- goes to n=3, infrared light given off
de Broglie

all matter has wave and particle characteristics

λ = h/mv

 

*v:velocity

Heisenberg
— Uncertainty Principle: impossible to know momentum and position of particle at same time; disproves Bohr’s e- orbit idea
Schrodinger
mathematical model of the atom (quantum mechanical model)
Aufbau Principle
e- enters orbitals of lowest energy first
Pauli Exclusion Principle
an atomic orbital contains a max or 2e- with opposite spins
Hund’s rule
when e- occupy orbitals of = energy, one e- enters each orbital until all orbitals… up up up
Lewis
Octet Rule: atoms gain or lose e- in order to obtain e- configuration of noble gas
Einstein

described tiny packets of Radiant Energy as photons: behave as paricles not waves (Planck’s theory)

;

E=mc2

x

Hi!
I'm Larry

Hi there, would you like to get such a paper? How about receiving a customized one?

Check it out