Saturday, October 05, 2002
Tellurium
Element Name: Tellurium
Atomic No.: 52
State (298 K): solid
Uses: alloys
Atomic Mass: 127.60 g/mol
Density: 6.24 g/cm
3
B.P.: 1263 K
F.P.: 723 K
Electronic Configuration: 1s
2
2s
2
2p
6
3s
2
3p
6
3d
10
4s
2
4p
6
4d
10
5s
2
5p
4
Isotopes:
120
Te 119.9045 amu (0.096%)
122
Te 121.9030 amu (2.60%)
123
Te 122.9042 amu (0.908%)
124
Te 123.9028 amu (4.816%)
125
Te 124.9044 amu (7.18%)
126
Te 125.9032 amu (18.95%)
128
Te 127.9047 amu (31.69%)
130
Te 129.9067 amu (33.80%)
Electronegativity: 2.10
Radius: 137 pm (covalent)
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