Symbol
Cr
Ce
Panggil Group
63
0
17
👆🏻
Panggil periode
46
2
7
👆🏻
Block
d block
pemblokiran f
Family unsur
transisi Metal
lanthanide
CAS Number
74404737440451
7429905
54386242
👆🏻
Jeneng papan Group
3M Im_
P63 / mmc
Space Group Number
229.00194.00
11
276
👆🏻
Facts Interesting
- 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.
- Cerium minangka logam bumi langka nanging isih ora langka.
- Iku senyawa non-beracun Cerium sulfida nduweni werna abang sugih lan digunakake minangka pigmen.
- Logam Cerium uga digunakake ing TV layar datar, bolam lampu, lampu sorot, lsp.
sumber
Found in Minerals, Mining, Ores logam, Ores saka Minerals
Found in Minerals, Mining, Ores saka Minerals
History
sing katutup
Louis Nicolas Vauquelin
Martin Heinrich Klaproth, Jöns Jakob Berzelius, Wilhelm Hisinger
Discovery
Ing Antarane 1797 - 1798
ing 1803
turah mbrawah
Turah mbrawah Ing Universe
0.00 %0.00 %
0
0.11
👆🏻
Turah mbrawah Ing Sun
0.00 %0.00 %
0
0.1
👆🏻
Turah mbrawah Ing meteorit
0.30 %0.00 %
0
22
👆🏻
Turah mbrawah Ing bumi lemah ndhuwur
0.01 %0.01 %
1E-37
8.1
👆🏻
Turah mbrawah Ing Segara
0.00 %0.00 %
0
1.1
👆🏻
Turah mbrawah Ing Manungsa
0.00 %0.00 %
0
1.4
👆🏻
Ulah lan Wuku
- Iki digunakake kanggo harden baja lan mrodhuksi stainless steel lan macem-macem wesi liyane.
- Iki uga digunakake kanggo menehi finish sing tepat kanggo mirrors polesan. Piring kromium digunakake ing perlengkapan jedhing.
- Kang digunakake kanggo kalebu flints kanggo korek rokok.
- Sawijining senyawa Cerium (Gerah) oksida digunakake minangka katalis; sijine nang tembok saka open minangka ngalangi saka buildup saka ampas masak.
Ulah Industrial
Industry automobile, Industri Kimia
Industri Kimia
Ulah Medical
-
Medical Research
Ulah liyane
wesi
wesi
Properties biologi
keracunan
Highly Toxic
arep Toxic
Saiki ing badan Human
Ya
Ya
Sang
0.11 Sang / mg dm-30.00 Sang / mg dm-3
0
1970
👆🏻
ing Bone
0.33 ppm2.70 ppm
0
170000
👆🏻
leleh Point
1,857.00 ° C795.00 ° C
-38.83
3410
👆🏻
Boiling Point
2,672.00 ° C3,257.00 ° C
0
5660
👆🏻
katon
State fisik
Solid
Solid
warna
Silver
perak Putih
luster
metallic
lustrous
atose
Mohs atose
8.502.50
0.2
8.5
👆🏻
Brinell atose
687.00 MPa186.00 MPa
0.14
3490
👆🏻
Vickers atose
1,060.00 MPa210.00 MPa
0
3920
👆🏻
Kacepetan swara
5,940.00 m / s2,100.00 m / s
818
16200
👆🏻
Properties Optical
bias Index
2.972.20
0.155
3.41
👆🏻
reflectivity
70.00 %68.00 %
5
97
👆🏻
allotropes
Ora
Ora
α allotropes
-
-
β allotropes
-
-
γ allotropes
-
-
Formula Kimia
Cr
Ce
isotop
Isotop dikenal
2130
0
38
👆🏻
keelektronegatifan
Pauling Elektronegativitas
1.661.12
0
2.6
👆🏻
Sanderson Elektronegativitas
1.661.12
0.22
2.56
👆🏻
Allred Rochow Elektronegativitas
1.561.08
0.86
1.9
👆🏻
Mulliken-Jaffe Elektronegativitas
1.661.12
0.62
2.48
👆🏻
Allen Elektronegativitas
1.651.12
0.659
2.7
👆🏻
Electropositivity
Pauling Electropositivity
2.342.88
1.46
3.3
👆🏻
tenogo ionisasi
Level Energy 1st
26,130.00 kJ / mol534.40 kJ / mol
375.7
26130
👆🏻
Level Energy 2
28,750.00 kJ / mol1,050.00 kJ / mol
392.8
28750
👆🏻
Level Energy 3rd
34,230.00 kJ / mol1,949.00 kJ / mol
392.8
34230
👆🏻
Level Energy 4
37,066.00 kJ / mol3,547.00 kJ / mol
375.7
37066
👆🏻
Level Energy 5th
97,510.00 kJ / mol6,325.00 kJ / mol
392
97510
👆🏻
Level Energy 6th
105,800.00 kJ / mol7,490.00 kJ / mol
1007
105800
👆🏻
tingkat Energy 7
114,300.00 kJ / mol5,340.00 kJ / mol
1007
114300
👆🏻
Level Energy 8
125,300.00 kJ / mol5,340.00 kJ / mol
730
125300
👆🏻
Level Energy 9
134,700.00 kJ / mol5,340.00 kJ / mol
1007
134700
👆🏻
Level Energy 10th
144,300.00 kJ / mol5,340.00 kJ / mol
392
144300
👆🏻
Level Energy 11
26,130.00 kJ / mol5,340.00 kJ / mol
392
169988
👆🏻
Level Energy 12
28,750.00 kJ / mol5,340.00 kJ / mol
0
189368
👆🏻
Level Energy 13
34,230.00 kJ / mol5,650.00 kJ / mol
1007
76015
👆🏻
Level Energy 14
37,066.00 kJ / mol5,340.00 kJ / mol
380
86450
👆🏻
Level Energy 15
97,510.00 kJ / mol53,400.00 kJ / mol
33000
100700
👆🏻
Level Energy 16
105,800.00 kJ / mol53,400.00 kJ / mol
375.7
109480
👆🏻
Level Energy 17
114,300.00 kJ / mol534.40 kJ / mol
375.7
122200
👆🏻
Level Energy 18
125,300.00 kJ / mol5,340.00 kJ / mol
0
134810
👆🏻
Level Energy 19
134,700.00 kJ / mol534.40 kJ / mol
375.7
148700
👆🏻
Level Energy 20
144,300.00 kJ / mol534.00 kJ / mol
0
171200
👆🏻
Level Energy 21
157,700.00 kJ / mol5,346.00 kJ / mol
375.7
179100
👆🏻
Level Energy 22
166,090.00 kJ / mol594.00 kJ / mol
330
184900
👆🏻
Level Energy 23rd
653.80 kJ / mol5,346.00 kJ / mol
357.6
198800
👆🏻
Level Energy 24
653.80 kJ / mol565.50 kJ / mol
297.3
195200
👆🏻
Level Energy 25th
653.80 kJ / mol534.40 kJ / mol
0
121900
👆🏻
Level Energy 26th
653.80 kJ / mol565.50 kJ / mol
357.6
127700
👆🏻
Level Energy 27th
652.90 kJ / mol565.50 kJ / mol
0
133800
👆🏻
Level Energy 28th
653.80 kJ / mol565.50 kJ / mol
297.3
139800
👆🏻
Level Energy 29
653.80 kJ / mol565.50 kJ / mol
0
148100
👆🏻
Level Energy 30
653.80 kJ / mol594.00 kJ / mol
0
154500
👆🏻
padha karo elektrokimia
0.32 g / amp-day1.74 g / amp-day
0.16812
8.3209
👆🏻
Fungsi Work elektron
4.50 eV2.84 eV
2.14
6
👆🏻
Properties Kimia liyane
anti Corrosion, Kimia Stabilitas, ionisasi, Isotop radioaktif, kelarutan
Kimia Stabilitas, anti Corrosion, ionisasi, Isotop radioaktif, kelarutan
Panggil atom
2458
3
117
👆🏻
Konfigurasi elektron
[Ar] 3d 5 4s 1
[Xe] 4F 1 5d 1 6s 2
Struktur Crystal
Body tengah kubik (Bcc)
Double Hexagonal Tutup dikempalken (DHCP)
Crystal pola
atom
Jumlah proton
2458
3
117
👆🏻
Jumlah Neutron
2882
4
285
👆🏻
Jumlah Èlèktron
2458
3
117
👆🏻
Radius saka Atom
Radius atom
128.00 pm181.80 pm
0
348
👆🏻
kovalen Radius
139.00 pm204.00 pm
0
260
👆🏻
Van der Waals Radius
200.00 pm235.00 pm
0
348
👆🏻
Bobot atom
52.00 Amu140.12 Amu
6.94
294
👆🏻
Volume atom
7.23 cm3 / mol20.67 cm3 / mol
1.39
71.07
👆🏻
Nomer atom jejer
unsur Previous
Sabanjure unsur
Potensi Valence Electron
170.00 (-eV)41.78 (-eV)
0
392.42
👆🏻
Constant pola
291.00 pm362.00 pm
0
891.25
👆🏻
pola Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
Pola C / A rasio
1.861.59
0.423
1.9
👆🏻
Kapadhetan
Kapadhetan Ing suhu kamar
7.19 g / cm 36.77 g / cm 3
0.534
40.7
👆🏻
Kapadhetan Nalika Liquid (ing mp)
6.30 g / cm36.55 g / cm3
0.512
41
👆🏻
Strength tensile
689.00 MPa270.00 MPa
0.1
11000
👆🏻
viskositas
0.000.00
1.5E-05
0.0035
👆🏻
meksa beluk
Meksa beluk ing 1000 K
0.00 (Pa)0.00 (Pa)
0
121
👆🏻
Meksa beluk ing 2000 K
774.00 (Pa)1.04 (Pa)
0
774
👆🏻
situs kelenturan
nyukur pengaturan
115.00 GPA13.50 GPA
1.3
222
👆🏻
pengaturan akeh
160.00 GPA21.50 GPA
0
462
👆🏻
Young kang pengaturan
279.00 GPA33.60 GPA
0
528
👆🏻
Poisson rasio
0.210.24
0.032
0.47
👆🏻
Properties Teknik liyane
-
ductile, malleable
Ciri Magnetic
Gravitasi tartamtu
7.196.77
0.53
4500
👆🏻
Nindakake Magnetic
Antiferromagnetic
paramagnetic
permeabilitas
0.00 H / m0.00 H / m
1.25643E-06
0.0063
👆🏻
kelemahan
0.000.00
-0.000166
200000
👆🏻
Properties Listrik
Property Listrik
-
Arman
resistivity
125.00 nΩ · m828.00 nΩ · m
0.1
961
👆🏻
konduktivitas listrik
0.08 10 6 / cm Ω0.01 10 6 / cm Ω
0
0.63
👆🏻
elektron Affinity
64.30 kJ / mol50.00 kJ / mol
0
222.8
👆🏻
Kalor tartamtu
0.45 J / (kg K)0.19 J / (kg K)
0.1
3.6
👆🏻
Graham Kapasitas kalor
23.35 J / mol · K26.94 J / mol · K
13.1
62.7
👆🏻
doyo termal
93.90 W / m · K11.30 W / m · K
0
429
👆🏻
suhu kritis
1,907.00 K1,071.00 K
26.3
3695
👆🏻
Expansion termal
4.90 μm / (m · K)6.30 μm / (m · K)
4.5
97
👆🏻
enthalpy
Enthalpy panguapan
348.80 kJ / mol414.00 kJ / mol
7.32
799.1
👆🏻
Enthalpy saka Fusion
15.31 kJ / mol5.46 kJ / mol
2.1
35.23
👆🏻
Enthalpy saka atomization
397.50 kJ / mol381.00 kJ / mol
61.5
837
👆🏻
Standard molar Entropy
23.80 J / mol.K72.00 J / mol.K
9.5
198.1
👆🏻