MendeleevPeriodic science

Mendeleev · tutorials

Mendeleev examples.

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D. Mendeleev

Sodium: the outer electron that changes almost everythingNa · Z=11 Chlorine: one electron changes the chargeCl · Z=17 Water: why H₂O is more than a formulaO · Z=8 Carbon: four bonds, enormous varietyC · Z=6 Neon: why an electric discharge makes lightNe · Z=10 Iron: where electrons meet magnetismFe · Z=26 Uranium: nuclei, probability and half-lifeU · Z=92 Helium: a filled first electron shellHe · Z=2 Oxygen: bonding and reactivityO · Z=8 Silicon: networks and semiconductorsSi · Z=14 Copper: why current flows so wellCu · Z=29 Hydrogen: one element, several isotopesH · Z=1 Calcium: why Ca²⁺ is commonCa · Z=20 Fluorine: exceptionally strong attraction in bondsF · Z=9 Argon: a stable outer shellAr · Z=18 Carbon-14: how a nucleus becomes a statistical clockC · Z=6