Chem Scientists Flashcards
1
Q
JJ Thomson
A
Discovered the electron, plum pudding model
2
Q
Mendeleev
A
created the periodic table
3
Q
Ernest Rutherford
A
gold foil experiment, discovered that the atoms had charges
4
Q
Neils Bohr
A
Created the Bohr model of the atom
5
Q
Democritus
A
first named the atom, after the greek ‘atomos’
6
Q
Robert Milikan
A
Oil drop experiment; determined size and charge of electron
7
Q
Aufbau Principle
A
Electrons fill the lowest available energy levels before moving up (think aufbau’s diagram)
8
Q
Heisenberg Uncertainty Principle
A
One can’t determine the location and momentum of an electron simultaneously
9
Q
Hund’s Rule
A
A greater total spin usually makes the atom more stable
10
Q
Pauli Exclusion Principle
A
Two electrons w/ identical spin cannot occupy the same quantum state at the same time
