Models of Atom Flashcards
Discovery of electron
Plum Pudding Model
Who discovered electron?
JJ Thompson
Negatively charged electrons are dispersed in a positively charged sphere
Plum Pudding Model
Discovery of nucleus and proton
Nuclear Model
Who discovered the nucleus and proton?
Ernest Rutherford
Who named proton?
Eugene Goldstein
It used the gold foil experiment or the bouncing back of alpha particles
Nuclear model
Who discovered the neutron?
James Chadwick
It is a discovery about how the electrons orbit the nucleus
Bohr’s Planetary Model
Bohr’s Planetary Model states that _____ is related to its _____.
(The smaller the orbit ring, the lower the energy)
energy, size
He stated that atoms are solid, uniform, incompressible, and indestructible.
Democritus
It states that the position of electron and momentum are impossible to determine at the same time since electrons are moving in a greater speed, but there is a probability to locate the electron.
Uncertainty Principle
Who is behind the uncertainty principle?
Werner Heisenberg
What is diamagnetic?
All electrons are paired and it is not affected by the magnetic field.
What is paramagnetic?
There are unpaired electrons and it is affected by the magnetic field.
