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| General
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| Name, Symbol, Number
| silicon, Si, 14
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| Series
| metalloid
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| Group, Period, Block
| 14 (IVA), 3, pThe p-block of the periodic table of elements consists of the last six groups. In the elemental form of the p-block elements, the highest energy electron occupies a p- orbital. The p-block contains all of the nonmetals and semimetals, as well as some of t
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| DensityFor other meanings of density, see density (disambiguation Density (symbol: rho Greek: rho) is a measure of mass per unit of volume. The higher an object's density, the higher its mass per volume. The average density of an object equals its total mass div, Hardness
| 2330 kg/m3, 6.5
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| AppearanceFor alternative meanings, see color (disambiguation). visual arts. Color (or colour is a sensation which (in humans) derives from the ability of the fine structure of the eye to distinguish three differently filtered analyses of a view. The perception of
| dark grey, bluish tinge
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| Atomic properties
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| Atomic weightIn reference to a certain isotope of a chemical element, atomic weight (more accurately relative atomic mass though also called simply atomic mass is the mass of one atom of the isotope expressed in units atomic mass unit amu) such that the Carbon-12 isot
| 28.0855 amuTo help compare different orders of magnitude we list here masses between 6. 02 amu and 60. 2 amu (10-26 kg and 10-25 kg). See also masses of other orders of magnitude. lighter masses 6. 941 amu atomic mass of lithium 44. 955910 amu atomic mass of scandiu
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| Atomic radiusAtomic radius is the distance from the atomic nucleus to the outmost stable electron orbital in a atom that is at equilibrium and is measured in picometers or Angstroms. Atomic radii are called covalent radii (a reference to the types of bonds formed) whe (calc.)
| 110 pm (111 pm)
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| Covalent radius
| 111 pm
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| van der Waals radius
| 210 pm
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| Electron configuration
| [ Ne]3 s2 3p2
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| e- 's per energy level
| 2, 8, 4
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| Oxidation states ( Oxide)
| 4 ( amphoteric)
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| Crystal structure
| cubic face centered
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| Physical properties
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| State of matter
| solid ( nonmagnetic)
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| Melting point
| 1687 K (2577 ° F)
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| Boiling point
| 3173 K (5252 °F)
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| Molar volume
| 12.06 ×10-6 m3/mol
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| Heat of vaporization
| 384.22 kJ/mol
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| Heat of fusion
| 50.55 kJ/mol
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| Vapor pressure
| 4.77 Pa at 1683 K
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| Speed of sound
| __ m/s at __ K
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| Miscellaneous
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| Electronegativity
| 1.90 ( Pauling scale)
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| Specific heat capacity
| 700 J/(kg*K)
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| Electrical conductivity
| 2.52 10-4/(m· ohm)
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| Thermal conductivity
| 148 W/(m*K)
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| 1st ionization potential
| 786.5 kJ/mol
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| 2nd ionization potential
| 1577.1 kJ/mol
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| 3rd ionization potential
| 3231.6 kJ/mol
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| 4th ionization potential
| 4355.5 kJ/mol
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| 5th ionization potential
| 16091 kJ/mol
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| 6th ionization potential
| 19805 kJ/mol
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| 7th ionization potential
| 23780 kJ/mol
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| 8th ionization potential
| 29287 kJ/mol
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| 9th ionization potential
| 33878 kJ/mol
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| 10th ionization potential
| 38726 kJ/mol
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| Most stable isotopes
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| SI units & STP are used except where noted.
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