Monday, July 23, 2007

Kremniy www.tool-tool.com

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Kremniy(Si)
Atom raqami 14
Koʻrinishi Amorf holatda -
jigarrang kukun,
kristall holatda — toʻq kul rang,
yaltiroq
Atom xossasi
Atom massasi
(molyar massasi)
28.0855 m. a. b. (g/mol)
Atom radiusi 132 pm
Ionlashish energiyasi
(birinchi elektron)
786.0(8.15) kJ/mol (eV)
Elektron konfiguratsiyasi [Ne] 3s2 3p2
Kimyoviy xossalari
Kovalentlik radiusi 111 pm
Ion radiusi 42 (+4e) 271 (-4e) pm
Elektrmanfiylik
(Poling boʻyicha)
1.90
Elektrod potensiali 0
Oksidlanish darajasi 4, −4
Termodinamik xossalari
Zichlik 2.33 g/sm³
Solishtirma issiqlik sigʻimi 19.8 J/(K·mol)
Issiqlik oʻtkazuvchanlik 149 Vt/(m·K)
Erish harorati 1688 K
Erish issiqligi 50.6 kJ/mol
Qaynash harorati 2623 K
Qaynash issiqligi 383 kJ/mol
Molyar hajm 12.1 sm³/mol
Kristall panjarasi
Panjara tuzilishi geksagonal
Panjara davri 5.430 Å
Panjara/atom nisbati n/a
Debay harorati 625.00 K
Kremniy - unsurlar davriy jadvalining 14 unsuri, metallmas.


BW Bewise Inc. Willy Chen willy@tool-tool.com bw@tool-tool.com www.tool-tool.com skype:willy_chen_bw mobile:0937-618-190 Head &Administration Office No.13,Shiang Shang 2nd St., West Chiu Taichung,Taiwan 40356 TEL:+886 4 24710048 / FAX:+886 4 2471 4839 N.Branch 5F,No.460,Fu Shin North Rd.,Taipei,Taiwan S.Branch No.24,Sec.1,Chia Pu East Rd.,Taipao City,Chiayi Hsien,Taiwan

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Bewise Inc. www.tool-tool.com

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