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Isotopic enrichment (%)
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Atomic Number: 14
Atomic Weight: 28.0855
Melting Point: 1687 K (1414°C or 2577°F)
Boiling Point: 3538 K (3265°C or 5909°F)
Density: 2.3296 grams per cubic centimeter
Phase at Room Temperature: Solid
Element Classification: Semi-metal
Period Number: 3
Group Number: 14
Group Name: none
Silicon isotopes are used in a variety of applications. Si-28 has been suggested to improve the thermal conductivity of semiconductors. Si-29 is used extensively in NMR spectroscopy. Si-30 has been used to produce the radioisotope Si-31. Si-30 has also been used to study the self-diffusivity of Silicon and it has been used to study the isotope effect on superconductivity.
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