# data[].attributes.body
Discovered the neutron

# data[].attributes.body
Schrodinger’s wave equation
Treat the electron like a wave
Developed an equation used to determine the probability of finding the electron in any given place around the nucleus
Solutions to the equation are quantum numbers
Quantum Model

# data[].attributes.body
Improved upon the atomic model by trying to answer the question: Why aren’t electron pulled into the nucleus?
Electrons travel in definite energy levels without radiating energy
Electrons in each orbit have a certain amount of energy
Electrons increase as distance from the nucleus increases
Electrons lose energy by dropping energy levels

# data[].attributes.body
Studied substances like alpha particles
Conducted gold foil experiments: He bombarded goil foils with alpha particles. Most particles passed through the foils, but some were deflected. He concluded that the atoms is mostly empty space, with a very small positive nucleus core
Nuclear Model

# data[].attributes.body
Used cathode rays to discover the electron measured the bending of the rays to determine the charge to mass ratio of the electron
Modified cathode ray tubes were used to discover the positively charged proton

# data[].attributes.body
Law of multiple proportions, statement that when two elements combine with each other to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

Proposed first atomic theory

1 all matter is made up of atoms

2 atoms of same elements are the same

3 atoms of different elements are different

4 atoms combine in whole number ratios to make compounds

# data[].attributes.body
Proposed the first idea of objects being made up of tiny invisible particles called atomos or atoms.