AT0MIC MODEL

• atoms - Is the smallest unit of matter that is composed of three sub-atomic particles: proton, electron, and neutron.
• john dalton - British chemist and physicist & Proposed the Solid Sphere Model in 1803
• solid sphere model - Atoms are dense and solid, with no internal structure or subatomic particles considered.
• jj thomson - Proposed the Plum Pudding Model in 1897.
• plum pudding model - Atoms are described as uniform, positively charged spheres with electrons embedded within them, similar to raisins in a pudding.
• ernest rutherford - i ntroduced the Nuclear Model in 1911
• neclear model - Atom consists of a small, dense, positively charged nucleus at the center, with electrons orbiting around it.
• niel bohr - Proposed the Planetary Model in 1913 .
• planetary model - Electrons are arranged in concentric specific circular orbits around the nucleus.
• erwin schrodinger - Proposed the Quantum Model in 1920.
• quantum model - Electrons do not have definite orbits, but are described by wave functions that represent probability distributions of their locations.