#ICIQCalendar December

🐈‍⬛ Density Functional Theory (1964)

🔬DFT simplifies the complex problem of electron interactions in many-body systems, using the electron density to investigate the electronic structure of matter.

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#ICIQCalendar November

🐈‍⬛Feynman’s path integral formulation (1948)

💡To find the probability that a particle (a photon or an electron) at point A ends up at point B at some later time, one must consider all possible paths it can take.

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#ICIQCalendar October

🐈‍⬛Pauling’s work on chemical bonding (1939)

🔬Bonded nuclei maintain an optimal distance (the bond distance) balancing attractive and repulsive effects explained using the principles of quantum mechanics

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#ICIQCalendar September

🐈‍⬛Hückel’s molecular orbital theory (1931)

🔗This method describes the behaviour of π-electrons in unsaturated molecules, particularly in aromatic compounds.

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#ICIQCalendar August

🐈‍⬛Dirac’s quantum electrodynamics (1928)

⚡The Dirac equation for an electron moving in an arbitrary electromagnetic field explains the origin of electron spin and predicts the existence of antimatter.

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#ICIQCalendar July

🐈‍⬛Heisenberg’s uncertainty principle (1927)

🎢One cannot simultaneously know the exact position and momentum of a particle. With an image of a rollercoaster car, we would only be able to precisely calculate its speed or its location

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#ICIQCalendar June

🐈‍Schrödinger’s wave equation (1926)

🌀This equation describes the energy and position of an electron in space and time, which describes how the quantum state of a physical system changes over time.

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#ICIQCalendar May

🐈‍⬛The Pauli Exclusion Principle (1925)

🔒Two or more identical particles cannot simultaneously occupy the same quantum state. In an atom, two electrons cannot be at the same time in the same state or configuration.

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#ICIQCalendar April

🐈‍⬛De Broglie’s wave-particle duality (1924)

🌊Matter, and light, have both wave and particle properties. The wave-particle duality is the start of quantum mechanics.

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#ICIQCalendar March

🐈‍⬛Bohr’s atomic model (1913)

🪐The electrons travel around the nucleus of an atom in distinct circular orbits, or shells. The model is also referred to as the planetary model of an atom.

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#ICIQCalendar February

🐈‍⬛ Einstein’s explanation of the photoelectric effect (1905)

🎳 Light behaves like a particle, called photon. A photon can discharge an electron from an atom if it collides with a greater energy than the electrostatic attraction.

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