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Properties of Metals - Metallurgy
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Tellurium
Symbol: Te
Atomic Number: 52
Atomic Weight: 127.6
Electron Configuration: [Kr] 4d10 5s2 5p4
Element Classification: Semimetallic
Discovery: Franz Joseph Meller von Reichenstein 1782 (Romania)
Name Origin: Latin: tellus (earth).
Density (g/cc): 6.24
Melting Point (K): 722.7
Boiling Point (K): 1263
Appearance: silvery-white, brittle semimetal
Atomic Radius (pm): 160
Atomic Volume (cc/mol): 20.5
Covalent Radius (pm): 136
Ionic Radius: 56 (+6e) 211 (-2e)
Specific Heat (@20°C J/g mol): 0.201
Fusion Heat (kJ/mol): 17.91
Evaporation Heat (kJ/mol): 49.8
Pauling Negativity Number: 2.1
First Ionizing Energy (kJ/mol): 869.0
Oxidation States: 6, 4, 2
Lattice Structure: Hexagonal
Lattice Constant (Å): 4.450
Lattice C/A Ratio: 1.330
References: Los Alamos National Laboratory (2001), Crescent Chemical Company (2001), Lange's Handbook of Chemistry (1952), CRC Handbook of Chemistry & Physics (18th Ed.)
Symbol: Te
Atomic Number: 52
Atomic Weight: 127.6
Electron Configuration: [Kr] 4d10 5s2 5p4
Element Classification: Semimetallic
Discovery: Franz Joseph Meller von Reichenstein 1782 (Romania)
Name Origin: Latin: tellus (earth).
Density (g/cc): 6.24
Melting Point (K): 722.7
Boiling Point (K): 1263
Appearance: silvery-white, brittle semimetal
Atomic Radius (pm): 160
Atomic Volume (cc/mol): 20.5
Covalent Radius (pm): 136
Ionic Radius: 56 (+6e) 211 (-2e)
Specific Heat (@20°C J/g mol): 0.201
Fusion Heat (kJ/mol): 17.91
Evaporation Heat (kJ/mol): 49.8
Pauling Negativity Number: 2.1
First Ionizing Energy (kJ/mol): 869.0
Oxidation States: 6, 4, 2
Lattice Structure: Hexagonal
Lattice Constant (Å): 4.450
Lattice C/A Ratio: 1.330
References: Los Alamos National Laboratory (2001), Crescent Chemical Company (2001), Lange's Handbook of Chemistry (1952), CRC Handbook of Chemistry & Physics (18th Ed.)
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Ref:T52
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