-
Atomic Model
Atoms are small and indivisible
They can't be divided, destroyed or created
Different elements have different properties
Atoms of different elements combine to form compounds
John Dalton -
Plum-pudding Model
Atoms consist of positive and negative charge
Atoms are neutrally charged
Negatively charged electrons are fixed in the positive sphere
Joseph John Thomson -
Nuclear Model
Atoms are mainly empty space
Positive charge is at the center, in the nucleus
Electrons move around the nucleus
Ernest Rutherford -
Planetary Model
Electrons orbit the nucleus
The orbits have specific size and energy
Energy relates to its size
The least energy is found in the smallest orbit
Electrons can move between orbits
Niels Bohr -
Quantum Mechanical Model
Electrons move around the nucleus in a cloud
Orbital helps us predict the area where we can find electrons
The closer to the nucleus, the higher chance of finding electrons
Erwin Schrodinger