BIOLOGÍA VIBRANT HORIZONTAL

timeline of Atomic models

• He proposed that matter is made by indivisble particles name "atoms".

• He introduced the idea that atoms differ in shape and sizes

5TH CENTURY BC

Democritus'

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• His realization was that atoms from different elements have different weights and characteristics
• His discover was the law of multiple proportions that affirmates that when two different elements combine and crate compounds ratios are whole numbers.

1803- 1808

jOHN DALTON

• Discovered the electron, he demostrated that atoms were not indivisible
• Proposed de "plum pudding model"

1904

J.J THOMSON

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• He discovered the nucleous showing that the atom´s positive charge and the most part of its matt is concentrated in a central nucleous surronded by electrons
• Demostrated that the atom is mostly an empty space

1911

ernest rutherford

• He introduced that electrons orbit the nucleous with especific energy levels
• He explained the emmison spectra hydrogen showing that electrons emit or absorb energy

1813

Niels bohr

+

• He introduced elliptical orbits and more quantum numbers
• He established the sublevels within energy levels

1916

Arnold sommerfeld

TIMELINE of atomic models

• Introduced the quantum mechanical model of the atom
• He formulated schrödinger´s equation in which he calculated the distribution of an electron´s position

1926

Erwin schrödinger

• They combined quantum mechanic with special relativity, introducing the concept of antimatter
• They developed the quantum field theory

1928

Dirac´s and jordan´s

• He discovered the neutron, a neutrally charged parcticle

• He explained the isotopes that are atoms of the same elements with different masses due to neutrons

1932

James chadwick

• It describes electronss as wave functions in orbitals aroun the nucleus
• It introduced the concept of quantum superposition and entaglement

actuality

schrödinger´s, heisenberg, dirac and others

fo

References

1. Adams, S. (1997). J Thomson and the discovery of the electrons. Physics Education, 32(4), 32-207. Retrieved from:https://iopscience.iop.org/article/10.1088/0031-9120/32/4/001/meta
2. Newton, K. (2023). The wavefunction and schrödinger’s equation . Retrieved on August 31st 2024. From: https://chem.libretexts.org/Courses/can/CHEM_210%3A_General_Chemistry_I_(An_Atoms_Up_Approach)/05%3A_The_Quantum_Model_of_the_Atom/5.06%3A_The_Wavefunction_and_Schrodinger's_Equation
3. Planas, O. (2023). Arnold Sommerfeld: pioneer in physics and atomic theory. Retrieved on August 31st 2024. From: https://nuclear-energy.net/atom/atomic-models/sommerfeld/arnold-sommerfeld
4. Nobel prize Outreach. (2024) Ernest Rutherford Biographical. Retrieved on August 31st 2024. From: https://www.nobelprize.org/prizes/chemistry/1908/rutherford/biographical/
5. Nobel prize Outreach. (2024)Niels Bohr Biographical. Retrieved on August 31st 2024. From: https://www.nobelprize.org/prizes/physics/1922/bohr/biographical/
6. Guinnessy, P. (2007). EU astroparticle road map. Physics today, 60 (11): 31. Retrieved from: https://doi.org/10.1063/1.2812120
7. Susi, T. (2022). Identifying and manipulating single atoms with scanning transmission electron microscopy. Retrieved on August 31st. From: https://pubs.rsc.org/en/content/articlehtml/2022/cc/d2cc04807h
8. Planas, O. (2023). Atomic theory: historical evolution. Retrieved on August 31st 2024. From: https://nuclear-energy.net/atom/atomic-theory
9. Chemistry Libre texts. (2022) .The quantum-mechanical model of an atom. Retrieved on August 31st of 2024. From:https://chem.libretexts.org/Courses/College_of_the_Canyons/Chem_201%3A_General_Chemistry_I_OER/09%3A_Electronic_Structure_and_Periodic_Table/9.04%3A_The_Quantum-Mechanical_Model_of_an_Atom (Consultado: el 31 de agosto de 2024).

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