Understanding the scientific rationale behind Tellurium's position in the periodic table:
Belongs to Group 16 (Chalcogens) because it has 6 valence electrons (5s² 5p⁴).
Belongs to Period 5 because its outermost electrons occupy n=5.
Belongs to the p-block because its valence electrons fill 5p orbitals.
Classified as a metalloid due to its semiconductor properties and crystalline brittle metallic luster.
Hover or tap any shell orbit ring to inspect electron counts and 2n² capacities.
Educational Note: This Niels Bohr planetary model visually illustrates principal quantum energy shells ($n=1, 2, 3\dots$) and electron counts. In modern quantum mechanics (Schrödinger model), electrons do not orbit in fixed circular planetary tracks, but exist as 3D probability clouds (orbitals: $s, p, d, f$) governed by the Heisenberg uncertainty principle.
Neutral ground state configuration. Valence electrons: 6.
Extracted exclusively as a byproduct of electrolytic copper refining anode slimes; occasionally found as native gold-tellurium ores (calaverite).
From Latin 'tellus' meaning Earth (complementing Selenium named after the Moon)
Moderately toxic; exposure causes severe, long-lasting garlic body odor ('tellurium breath') and central nervous system depression.