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Ptable: Interactive Periodic Table

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Interactive periodic table showing electron configurations, orbital diagrams, atomic radii, ionization energies, isotopes, and compound data, with sliders for oxidation state and temperature dependent phases. Useful for checking element properties and periodic trends while studying.

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The Disappearing Spoon

Entertaining exploration of the periodic table through historical anecdotes, discoveries, and the human stories behind chemical elements.

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Atomic and Optical Physics I (MIT 8.421)

Graduate foundations of atom-light interaction: resonance, absorption and emission, the dressed-atom picture, masers and lasers, cavity QED, atomic structure in strong fields, and tests of time reversal, parity and Bell's inequalities. 25 lecture videos, problem sets and exams prepare learners for AMO research.

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Chemistry

Master atomic structure & the periodic table with this free Chemistry course from Khan Academy. Build a strong foundation today!

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Chem LibreTexts - Acids and Bases

Open general chemistry textbook chapters covering acid-base definitions, ionization constants, pH calculations, polyprotic acids, buffers and hydrolysis, with worked examples and exercises. Suited to working through the theory at your own pace alongside a course.

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periodictable.com

periodictable.com is an interactive periodic table resource where you can click elements to view key data such as symbol, atomic number, weight, electron configuration, and properties, along with classifications and trends. It also provides historical context and explanations to help learners understand atomic structure and periodicity.

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Quantum Chemistry

Undergraduate text developing the Schrodinger equation, harmonic oscillator, hydrogen atom, angular momentum, variational and perturbation methods, and molecular orbital theory. Math heavy chapters prepare readers to compute atomic orbitals and interpret the electronic structure of small molecules.

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