1 Tabelul periodic
1.1 Simbol
Cr
1.2 Număr grup
1.3 perioada Număr
1.4 bloc
d block
1.5 Element de familie
metal de tranziție
1.6 Numărul CAS
7440473
Rank: 39 (Overall) ▶
7429905
54386242
1.7 Nume grup spațiu
3m Im_
1.8 Număr spațiu grup
229,00
Rank: 1 (Overall) ▶
11
229
2 Fapte
2.1 Fapte interesante
Character length exceed error
2.2 surse
S-au găsit în minerale, Minerit, Minereu metale, Minereurile de minerale
2.3 Istorie
2.3.1 care a descoperit
Louis Nicolas Vauquelin
2.3.2 Descoperire
În perioada 1797 - 1798
2.4 Abundenţă
2.4.1 Abundenței În Universul
1.5 * 10-3 %
Rank: 7 (Overall) ▶
5E-09
0.11
2.4.2 Abundenței În Soare
~0.002 %
Rank: 7 (Overall) ▶
1E-08
0.1
2.4.3 Abundenței În Meteoriți
0,30 %
Rank: 7 (Overall) ▶
1.7E-07
22
2.4.4 Abundenței în scoarța Pământului
0,01 %
Rank: 13 (Overall) ▶
9.9E-12
8.1
2.4.5 Abundenței în oceanele
0,00 %
Rank: 16 (Overall) ▶
2E-23
1.1
2.4.6 Abundenței la om
0,00 %
Rank: 16 (Overall) ▶
1E-13
1.4
3 utilizări
3.1 Utilizări și beneficii
Character length exceed error
3.1.1 Utilizări industriale
industria de automobile, Industria chimica
3.1.2 Utilizări medicale
N / A
3.1.3 alte utilizări
Aliaje
3.2 Proprietățile biologice
3.2.1 Toxicitate
Toxic puternic
3.2.2 Prezent în corpul uman
da
3.2.3 in Blood
0,11 Sânge / mg dm-3
Rank: 12 (Overall) ▶
0
1970
3.2.4 in Bone
0,33 ppm
Rank: 21 (Overall) ▶
0
170000
4 Fizic
4.1 Punct de topire
1.857,00 ° C
Rank: 14 (Overall) ▶
27
3410
4.2 Punct de fierbere
2.672,00 ° C
Rank: 39 (Overall) ▶
147
5660
4.3 Aspect
4.3.1 Stare fizică
Solid
4.3.2 Culoare
Argint
4.3.3 Luciu
Metalic
4.4 Duritate
4.4.1 Mohs Duritate
4.4.2 Duritatea Brinell
687,00 MPa
Rank: 16 (Overall) ▶
0.14
3490
4.4.3 Duritatea Vickers
1.060,00 MPa
Rank: 10 (Overall) ▶
121
3430
4.5 Viteza sunetului
5.940,00 Domnișoară
Rank: 5 (Overall) ▶
818
16200
4.6 Proprietăți optice
4.6.1 Indicele de refractie
Nu e disponibil
Rank: N/A (Overall) ▶
1.000933
1.7229
4.6.2 reflexiei
Nu e disponibil
Rank: N/A (Overall) ▶
58
97
4.7 forme alotropice
Nu
4.7.1 alfa forme alotropice
Nu e disponibil
4.7.2 p forme alotropice
Nu e disponibil
4.7.3 y forme alotropice
Nu e disponibil
5 Chimic
5.1 Formula chimica
Cr
5.2 izotopii
5.2.1 Izotopi cunoscute
5.3 Electronegativitate
5.3.1 Pauling Electronegativitate
1,66
Rank: 18 (Overall) ▶
0.7
2.54
5.3.2 Sanderson Electronegativitate
1,66
Rank: 14 (Overall) ▶
0.22
2.56
5.3.3 Allred Rochow Electronegativitate
1,56
Rank: 10 (Overall) ▶
0.86
1.82
5.3.4 Mulliken-Jaffe Electronegativitate
Nu e disponibil
Rank: N/A (Overall) ▶
0.62
2.48
5.3.5 Allen Electronegativitate
1,65
Rank: 19 (Overall) ▶
0.659
2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
2,34
Rank: 36 (Overall) ▶
1.46
3.3
5.5 Energiile ionizarea
5.5.1 Primul nivel de energie
26.130,00 kJ / mol
Rank: 1 (Overall) ▶
375.7
26130
5.5.2 Nivelul 2 Energie
28.750,00 kJ / mol
Rank: 1 (Overall) ▶
710.2162
28750
5.5.3 3rd Level Energy
34.230,00 kJ / mol
Rank: 1 (Overall) ▶
1600
34230
5.5.4 4a Nivel de energie
37.066,00 kJ / mol
Rank: 1 (Overall) ▶
2780
37066
5.5.5 A 5 Nivel de energie
97.510,00 kJ / mol
Rank: 1 (Overall) ▶
4305.2
97510
5.5.6 A 6 Nivel de energie
105.800,00 kJ / mol
Rank: 1 (Overall) ▶
5715.8
105800
5.5.7 Nivelul de energie al 7-lea
114.300,00 kJ / mol
Rank: 1 (Overall) ▶
7226.8
114300
5.5.8 A 8-Level Energy
125.300,00 kJ / mol
Rank: 1 (Overall) ▶
8857.4
125300
5.5.9 Al 9-lea nivel de energie
134.700,00 kJ / mol
Rank: 1 (Overall) ▶
14110
134700
5.5.10 A 10 Nivel de energie
144.300,00 kJ / mol
Rank: 1 (Overall) ▶
17100
144300
5.5.11 11 Nivelul de energie
26.130,00 kJ / mol
Rank: 12 (Overall) ▶
19900
169988
5.5.12 12 Nivelul de energie
28.750,00 kJ / mol
Rank: 13 (Overall) ▶
22219
189368
5.5.13 13 Nivel de energie
34.230,00 kJ / mol
Rank: 10 (Overall) ▶
26930
76015
5.5.14 14 Nivel de energie
37.066,00 kJ / mol
Rank: 12 (Overall) ▶
29196
86450
5.5.15 15 Nivel de energie
97.510,00 kJ / mol
Rank: 1 (Overall) ▶
41987
97510
5.5.16 16 Nivelul de energie
105.800,00 kJ / mol
Rank: 2 (Overall) ▶
47206
109480
5.5.17 17 Nivelul de energie
114.300,00 kJ / mol
Rank: 3 (Overall) ▶
52737
122200
5.5.18 18 Nivelul de energie
125.300,00 kJ / mol
Rank: 4 (Overall) ▶
58570
134810
5.5.19 19 Nivel de energie
134.700,00 kJ / mol
Rank: 5 (Overall) ▶
64702
148700
5.5.20 20 Nivelul de energie
144.300,00 kJ / mol
Rank: 7 (Overall) ▶
80400
171200
5.5.21 21 Nivelul de energie
157.700,00 kJ / mol
Rank: 7 (Overall) ▶
87000
179100
5.5.22 22 Nivelul de energie
166.090,00 kJ / mol
Rank: 6 (Overall) ▶
93400
184900
5.5.23 23 Nivelul de energie
Nu e disponibil
Rank: 100 (Overall) ▶
98420
198800
5.5.24 24 Nivelul de energie
Nu e disponibil
Rank: 100 (Overall) ▶
104400
195200
5.5.25 25 Nivelul de energie
Nu e disponibil
Rank: N/A (Overall) ▶
121900
121900
5.5.26 26 Nivelul de energie
Nu e disponibil
Rank: N/A (Overall) ▶
127700
127700
5.5.27 27 Nivelul de energie
Nu e disponibil
Rank: N/A (Overall) ▶
133800
133800
5.5.28 28 Nivelul de energie
Nu e disponibil
Rank: N/A (Overall) ▶
139800
139800
5.5.29 29 Nivelul de energie
Nu e disponibil
Rank: N/A (Overall) ▶
148100
148100
5.5.30 30 Nivelul de energie
Nu e disponibil
Rank: N/A (Overall) ▶
154500
154500
5.6 echivalent electrochimică
0,32 g / amp-hr
Rank: 73 (Overall) ▶
0.16812
8.3209
5.7 Funcția de electroni de lucru
4,50 eV
Rank: 14 (Overall) ▶
2.14
5.65
5.8 Celelalte proprietăți chimice
anti coroziune, Stabilitate chimică, ionizarea, Izotopii radioactivi, Solubilitate
6 Atomic
6.1 Numar atomic
6.2 Configuratie electronica
[Ar] 3d5 4s1
6.3 Structura de cristal
Corp Centrat cilindrică (CCA)
6.3.1 rețelei de cristal
6.4 Atom
6.4.1 Numărul de Protonii
6.4.2 Numărul de Neutronii
6.4.3 Numărul de Electronii
6.5 Raza unui Atom
6.5.1 Raza atomică
128,00 p.m
Rank: 46 (Overall) ▶
112
265
6.5.2 Raza covalentă
139,00 p.m
Rank: 45 (Overall) ▶
96
260
6.5.3 Van der Waals Raza
200,00 p.m
Rank: 28 (Overall) ▶
139
348
6.6 Greutate atomica
52,00 amu
Rank: 76 (Overall) ▶
6.94
294
6.7 volum atomic
7,23 cm3 / mol
Rank: 60 (Overall) ▶
1.39
71.07
6.8 Numere atomice adiacente
6.8.1 Elementul precedent
6.8.2 Elementul următor
6.9 Valence Electron Potential
170,00 (-EV)
Rank: 4 (Overall) ▶
8
392.42
6.10 Constant zabrele
291,00 p.m
Rank: 62 (Overall) ▶
228.58
891.25
6.11 zabrele Unghiuri
π/2, π/2, π/2
6.12 C latice / A Ratio
Nu e disponibil
Rank: N/A (Overall) ▶
1.567
1.886
7 Mecanic
7.1 Densitate
7.1.1 Densitatea la temperatura camerei
7,19 g / cm3
Rank: 58 (Overall) ▶
0.534
40.7
7.1.2 Densitate Când lichid (la mp)
6,30 g / cm3
Rank: 40 (Overall) ▶
0.512
20
7.2 Rezistență la tracțiune
689,00 MPa
Rank: 7 (Overall) ▶
2.5
11000
7.3 Viscozitate
Nu e disponibil
Rank: N/A (Overall) ▶
0.001526
0.001526
7.4 Presiunea de vapori
7.4.1 Presiunea de vapori la 1000 K
0,00 (Pa)
Rank: 24 (Overall) ▶
2.47E-11
121
7.4.2 Presiunea de vapori la 2000 K
774,00 (Pa)
Rank: 1 (Overall) ▶
2.62E-10
774
7.5 Proprietățile elasticitate
7.5.1 shear Modulus
115,00 GPa
Rank: 9 (Overall) ▶
1.3
222
7.5.2 Modulus în vrac
160,00 GPa
Rank: 11 (Overall) ▶
1.6
462
7.5.3 Modulul lui Young
279,00 GPa
Rank: 8 (Overall) ▶
1.7
528
7.6 poisson Raportul
0,21
Rank: 32 (Overall) ▶
0.032
0.47
7.7 Alte proprietăți mecanice
N / A
8 Magnetic
8.1 Caracteristici magnetice
8.1.1 Gravitație specifică
7,19
Rank: 46 (Overall) ▶
0.53
4500
8.1.2 Comenzi magnetice
antiferomagnetică
8.1.3 Permeabilitate
Nu e disponibil
Rank: N/A (Overall) ▶
1.25643E-06
0.0063
8.1.4 Susceptibil
Nu e disponibil
Rank: N/A (Overall) ▶
-0.000166
200000
8.2 Proprietăți electrice
8.2.1 Domeniul imobilier electrice
N / A
8.2.2 Rezistivitatea
125,00 nΩ · m
Rank: 27 (Overall) ▶
0.18
961
8.2.3 Conductivitate electrică
0,08 10 6 / cm Ω
Rank: 25 (Overall) ▶
0.00666
0.63
8.2.4 electron afinitate
64,30 kJ / mol
Rank: 15 (Overall) ▶
0
222.8
9 Termic
9.1 Căldura specifică
0,45 J / (kg K)
Rank: 12 (Overall) ▶
0.11
3.6
9.2 Molara Capacitatea de căldură
23,35 J / mol · K
Rank: 55 (Overall) ▶
16.443
62.7
9.3 Conductivitate termică
93,90 W / m · K
Rank: 17 (Overall) ▶
6.3
429
9.4 Temperatura critică
Nu e disponibil
Rank: N/A (Overall) ▶
26.3
3223
9.5 Expansiunea termică
4,90 pm / (m · K)
Rank: 57 (Overall) ▶
4.5
97
9.6 entalpia
9.6.1 Entalpia de Vaporizarea
348,80 kJ / mol
Rank: 24 (Overall) ▶
7.32
799.1
9.6.2 Entalpie Fusion
15,31 kJ / mol
Rank: 20 (Overall) ▶
2.1
35.23
9.6.3 Entalpie de atomizare
397,50 kJ / mol
Rank: 21 (Overall) ▶
61.5
837
9.7 Standard Molar Entropy
23,80 J / mol.K
Rank: 57 (Overall) ▶
9.5
198.1