1 Tabel périodik
1.1 Symbol
1.2 Panggil Group
1.3 Panggil periode
1.4 Block
1.5 Family unsur
lanthanide
transisi Metal
1.6 CAS Number
74405317440473
7429905
54386242
1.7 Jeneng papan Group
1.8 Space Group Number
2 facts
2.1 Facts Interesting
ora Cepak
- Krom punika reaktif, Empu durung ketemu gratis ing alam.
- Ores saka Chromites Mineral sing sumber utama saka logam Krom.
- Meh 90% penyamakan kulit wis rampung karo bantuan saka krom.
2.2 sumber
Found in Minerals, Mining, Ores saka Minerals
Found in Minerals, Mining, Ores logam, Ores saka Minerals
2.3 History
2.3.1 sing katutup
Eugène-Anatole Demarçay
Louis Nicolas Vauquelin
2.3.2 Discovery
ing taun 1896
Ing Antarane 1797 - 1798
2.4 turah mbrawah
2.4.1 Turah mbrawah Ing Universe
5 * 10-8 %1.5 * 10-3 %
5E-09
0.11
2.4.2 Turah mbrawah Ing Sun
~0.00000005 %~0.002 %
1E-08
0.1
2.4.3 Turah mbrawah Ing meteorit
2.4.4 Turah mbrawah Ing bumi lemah ndhuwur
2.4.5 Turah mbrawah Ing Segara
2.4.6 Turah mbrawah Ing Manungsa
ora Sumadhiya0.00 %
1E-13
1.4
3 ulah
3.1 Ulah lan Wuku
- logam Europium utama Efesus ing printing saka dhuwit kertas Euro. cathetan iki cemlorot abang ing lampu UV.
- Kang digunakake ing bolam lampu kurang energi.
Character length exceed error
3.1.1 Ulah Industrial
Industri Kimia
Industry automobile, Industri Kimia
3.1.2 Ulah Medical
3.1.3 Ulah liyane
3.2 Properties biologi
3.2.1 keracunan
3.2.2 Saiki ing badan Human
3.2.3 Sang
ora Sumadhiya0.11 Sang / mg dm-3
0
1970
3.2.4 ing Bone
ora Sumadhiya0.33 ppm
0
170000
4 fisik
4.1 leleh Point
822.00 ° C1,857.00 ° C
27
3410
4.2 Boiling Point
1,597.00 ° C2,672.00 ° C
147
5660
4.3 katon
4.3.1 State fisik
4.3.2 warna
4.3.3 luster
4.4 atose
4.4.1 Mohs atose
ora Sumadhiya8.50
0.2
8.5
4.4.2 Brinell atose
ora Sumadhiya687.00 MPa
0.14
3490
4.4.3 Vickers atose
167.00 MPa1,060.00 MPa
121
3430
4.5 Kacepetan swara
ora Sumadhiya5,940.00 m / s
818
16200
4.6 Properties Optical
4.6.1 bias Index
ora Sumadhiyaora Sumadhiya
1.000933
1.7229
4.6.2 reflectivity
ora Sumadhiyaora Sumadhiya
58
97
4.7 allotropes
4.7.1 α allotropes
ora Sumadhiya
ora Sumadhiya
4.7.2 β allotropes
ora Sumadhiya
ora Sumadhiya
4.7.3 γ allotropes
ora Sumadhiya
ora Sumadhiya
5 Kimia
5.1 Formula Kimia
5.2 isotop
5.2.1 Isotop dikenal
5.3 keelektronegatifan
5.3.1 Pauling Elektronegativitas
5.3.2 Sanderson Elektronegativitas
5.3.3 Allred Rochow Elektronegativitas
ora Sumadhiya1.56
0.86
1.82
5.3.4 Mulliken-Jaffe Elektronegativitas
ora Sumadhiyaora Sumadhiya
0.62
2.48
5.3.5 Allen Elektronegativitas
ora Sumadhiya1.65
0.659
2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
ora Sumadhiya2.34
1.46
3.3
5.5 tenogo ionisasi
5.5.1 Level Energy 1st
547.10 kJ / mol26,130.00 kJ / mol
375.7
26130
5.5.2 Level Energy 2
1,085.00 kJ / mol28,750.00 kJ / mol
710.2162
28750
5.5.3 Level Energy 3rd
2,404.00 kJ / mol34,230.00 kJ / mol
1600
34230
5.5.4 Level Energy 4
4,120.00 kJ / mol37,066.00 kJ / mol
2780
37066
5.5.5 Level Energy 5th
ora Sumadhiya97,510.00 kJ / mol
4305.2
97510
5.5.6 Level Energy 6th
ora Sumadhiya105,800.00 kJ / mol
5715.8
105800
5.5.7 tingkat Energy 7
ora Sumadhiya114,300.00 kJ / mol
7226.8
114300
5.5.8 Level Energy 8
ora Sumadhiya125,300.00 kJ / mol
8857.4
125300
5.5.9 Level Energy 9
ora Sumadhiya134,700.00 kJ / mol
14110
134700
5.5.10 Level Energy 10th
ora Sumadhiya144,300.00 kJ / mol
17100
144300
5.5.11 Level Energy 11
ora Sumadhiya26,130.00 kJ / mol
19900
169988
5.5.12 Level Energy 12
ora Sumadhiya28,750.00 kJ / mol
22219
189368
5.5.13 Level Energy 13
ora Sumadhiya34,230.00 kJ / mol
26930
76015
5.5.14 Level Energy 14
ora Sumadhiya37,066.00 kJ / mol
29196
86450
5.5.15 Level Energy 15
ora Sumadhiya97,510.00 kJ / mol
41987
97510
5.5.16 Level Energy 16
ora Sumadhiya105,800.00 kJ / mol
47206
109480
5.5.17 Level Energy 17
ora Sumadhiya114,300.00 kJ / mol
52737
122200
5.5.18 Level Energy 18
ora Sumadhiya125,300.00 kJ / mol
58570
134810
5.5.19 Level Energy 19
ora Sumadhiya134,700.00 kJ / mol
64702
148700
5.5.20 Level Energy 20
ora Sumadhiya144,300.00 kJ / mol
80400
171200
5.5.21 Level Energy 21
ora Sumadhiya157,700.00 kJ / mol
87000
179100
5.5.22 Level Energy 22
ora Sumadhiya166,090.00 kJ / mol
93400
184900
5.5.23 Level Energy 23rd
ora Sumadhiyaora Sumadhiya
98420
198800
5.5.24 Level Energy 24
ora Sumadhiyaora Sumadhiya
104400
195200
5.5.25 Level Energy 25th
ora Sumadhiyaora Sumadhiya
121900
121900
5.5.26 Level Energy 26th
ora Sumadhiyaora Sumadhiya
127700
127700
5.5.27 Level Energy 27th
ora Sumadhiyaora Sumadhiya
133800
133800
5.5.28 Level Energy 28th
ora Sumadhiyaora Sumadhiya
139800
139800
5.5.29 Level Energy 29
ora Sumadhiyaora Sumadhiya
148100
148100
5.5.30 Level Energy 30
ora Sumadhiyaora Sumadhiya
154500
154500
5.6 padha karo elektrokimia
1.89 g / amp-day0.32 g / amp-day
0.16812
8.3209
5.7 Fungsi Work elektron
5.8 Properties Kimia liyane
ionisasi, Isotop radioaktif, kelarutan
anti Corrosion, Kimia Stabilitas, ionisasi, Isotop radioaktif, kelarutan
6 atom
6.1 Panggil atom
6.2 Konfigurasi elektron
[Xe] 4F 7 6s 2
[Ar] 3d 5 4s 1
6.3 Struktur Crystal
Body tengah kubik (Bcc)
Body tengah kubik (Bcc)
6.3.1 Crystal pola
6.4 atom
6.4.1 Jumlah proton
6.4.2 Jumlah Neutron
6.4.3 Jumlah Èlèktron
6.5 Radius saka Atom
6.5.1 Radius atom
180.00 pm128.00 pm
112
265
6.5.2 kovalen Radius
198.00 pm139.00 pm
96
260
6.5.3 Van der Waals Radius
233.00 pm200.00 pm
139
348
6.6 Bobot atom
151.96 Amu52.00 Amu
6.94
294
6.7 Volume atom
28.90 cm3 / mol7.23 cm3 / mol
1.39
71.07
6.8 Nomer atom jejer
6.8.1 unsur Previous
6.8.2 Sabanjure unsur
6.9 Potensi Valence Electron
45.60 (-eV)170.00 (-eV)
8
392.42
6.10 Constant pola
458.10 pm291.00 pm
228.58
891.25
6.11 pola Angles
π/2, π/2, π/2
π/2, π/2, π/2
6.12 Pola C / A rasio
ora Sumadhiyaora Sumadhiya
1.567
1.886
7 Teknik
7.1 Kapadhetan
7.1.1 Kapadhetan Ing suhu kamar
5.26 g / cm 37.19 g / cm 3
0.534
40.7
7.1.2 Kapadhetan Nalika Liquid (ing mp)
5.13 g / cm36.30 g / cm3
0.512
20
7.2 Strength tensile
120.00 MPa689.00 MPa
2.5
11000
7.3 viskositas
ora Sumadhiyaora Sumadhiya
0.001526
0.001526
7.4 meksa beluk
7.4.1 Meksa beluk ing 1000 K
19.40 (Pa)0.00 (Pa)
2.47E-11
121
7.4.2 Meksa beluk ing 2000 K
ora Sumadhiya774.00 (Pa)
2.62E-10
774
7.5 situs kelenturan
7.5.1 nyukur pengaturan
7.90 GPA115.00 GPA
1.3
222
7.5.2 pengaturan akeh
8.30 GPA160.00 GPA
1.6
462
7.5.3 Young kang pengaturan
18.20 GPA279.00 GPA
1.7
528
7.6 Poisson rasio
7.7 Properties Teknik liyane
8 Magnetic
8.1 Ciri Magnetic
8.1.1 Gravitasi tartamtu
8.1.2 Nindakake Magnetic
paramagnetic
Antiferromagnetic
8.1.3 permeabilitas
ora Sumadhiyaora Sumadhiya
1.25643E-06
0.0063
8.1.4 kelemahan
ora Sumadhiyaora Sumadhiya
-0.000166
200000
8.2 Properties Listrik
8.2.1 Property Listrik
8.2.2 resistivity
0.90 nΩ · m125.00 nΩ · m
0.18
961
8.2.3 konduktivitas listrik
0.01 10 6 / cm Ω0.08 10 6 / cm Ω
0.00666
0.63
8.2.4 elektron Affinity
50.00 kJ / mol64.30 kJ / mol
0
222.8
9 termal
9.1 Kalor tartamtu
0.18 J / (kg K)0.45 J / (kg K)
0.11
3.6
9.2 Graham Kapasitas kalor
27.66 J / mol · K23.35 J / mol · K
16.443
62.7
9.3 doyo termal
13.90 W / m · K93.90 W / m · K
6.3
429
9.4 suhu kritis
ora Sumadhiyaora Sumadhiya
26.3
3223
9.5 Expansion termal
35.00 μm / (m · K)4.90 μm / (m · K)
4.5
97
9.6 enthalpy
9.6.1 Enthalpy panguapan
143.50 kJ / mol348.80 kJ / mol
7.32
799.1
9.6.2 Enthalpy saka Fusion
9.21 kJ / mol15.31 kJ / mol
2.1
35.23
9.6.3 Enthalpy saka atomization
180.00 kJ / mol397.50 kJ / mol
61.5
837
9.7 Standard molar Entropy
77.80 J / mol.K23.80 J / mol.K
9.5
198.1