Symbol
Md
Cr
Panggil Group
36
0
17
👆🏻
Panggil periode
74
2
7
👆🏻
Block
pemblokiran f
d block
Family unsur
actinide
transisi Metal
CAS Number
74401117440473
7429905
54386242
👆🏻
Jeneng papan Group
-
3M Im_
Space Group Number
194.00229.00
11
276
👆🏻
Facts Interesting
- metal Mendelevium wis sintetik diprodhuksi logam.
- metal Mendelevium wis diprodhuksi ing mung jumlah tilak.
- 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.
sumber
Némbakaké einsteinium karo helium ion
Found in Minerals, Mining, Ores logam, Ores saka Minerals
History
sing katutup
Lawrence Berkeley National Laboratory
Louis Nicolas Vauquelin
Discovery
ing taun 1955
Ing Antarane 1797 - 1798
turah mbrawah
Turah mbrawah Ing Universe
0.00 %0.00 %
0
0.11
👆🏻
Turah mbrawah Ing Sun
-0.00 %
0
0.1
👆🏻
Turah mbrawah Ing meteorit
0.00 %0.30 %
0
22
👆🏻
Turah mbrawah Ing bumi lemah ndhuwur
-0.01 %
1E-37
8.1
👆🏻
Turah mbrawah Ing Segara
-0.00 %
0
1.1
👆🏻
Turah mbrawah Ing Manungsa
0.00 %0.00 %
0
1.4
👆🏻
Ulah lan Wuku
- Efesus saiki dikenal saka logam Mendelevium sing winates kanggo riset waé mung.
- 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.
Ulah Industrial
-
Industry automobile, Industri Kimia
Ulah Medical
-
-
Ulah liyane
-
wesi
Properties biologi
keracunan
-
Highly Toxic
Saiki ing badan Human
Ora
Ya
Sang
0.00 Sang / mg dm-30.11 Sang / mg dm-3
0
1970
👆🏻
ing Bone
0.00 ppm0.33 ppm
0
170000
👆🏻
leleh Point
827.00 ° C1,857.00 ° C
-38.83
3410
👆🏻
Boiling Point
0.00 ° C2,672.00 ° C
0
5660
👆🏻
katon
State fisik
Solid
Solid
warna
-
Silver
luster
metallic
metallic
atose
Mohs atose
-8.50
0.2
8.5
👆🏻
Brinell atose
350.00 MPa687.00 MPa
0.14
3490
👆🏻
Vickers atose
0.00 MPa1,060.00 MPa
0
3920
👆🏻
Kacepetan swara
2,680.00 m / s5,940.00 m / s
818
16200
👆🏻
Properties Optical
bias Index
1.302.97
0.155
3.41
👆🏻
reflectivity
66.00 %70.00 %
5
97
👆🏻
allotropes
Ora
Ora
α allotropes
-
-
β allotropes
-
-
γ allotropes
-
-
Formula Kimia
Md
Cr
isotop
Isotop dikenal
1621
0
38
👆🏻
keelektronegatifan
Pauling Elektronegativitas
1.301.66
0
2.6
👆🏻
Sanderson Elektronegativitas
1.301.66
0.22
2.56
👆🏻
Allred Rochow Elektronegativitas
1.201.56
0.86
1.9
👆🏻
Mulliken-Jaffe Elektronegativitas
1.301.66
0.62
2.48
👆🏻
Allen Elektronegativitas
1.301.65
0.659
2.7
👆🏻
Electropositivity
Pauling Electropositivity
2.702.34
1.46
3.3
👆🏻
tenogo ionisasi
Level Energy 1st
635.00 kJ / mol26,130.00 kJ / mol
375.7
26130
👆🏻
Level Energy 2
1,235.00 kJ / mol28,750.00 kJ / mol
392.8
28750
👆🏻
Level Energy 3rd
2,470.00 kJ / mol34,230.00 kJ / mol
392.8
34230
👆🏻
Level Energy 4
3,840.00 kJ / mol37,066.00 kJ / mol
375.7
37066
👆🏻
Level Energy 5th
6,350.00 kJ / mol97,510.00 kJ / mol
392
97510
👆🏻
Level Energy 6th
6,350.00 kJ / mol105,800.00 kJ / mol
1007
105800
👆🏻
tingkat Energy 7
6,350.00 kJ / mol114,300.00 kJ / mol
1007
114300
👆🏻
Level Energy 8
6,350.00 kJ / mol125,300.00 kJ / mol
730
125300
👆🏻
Level Energy 9
6,350.00 kJ / mol134,700.00 kJ / mol
1007
134700
👆🏻
Level Energy 10th
6,350.00 kJ / mol144,300.00 kJ / mol
392
144300
👆🏻
Level Energy 11
6,400.00 kJ / mol26,130.00 kJ / mol
392
169988
👆🏻
Level Energy 12
60,100.00 kJ / mol28,750.00 kJ / mol
0
189368
👆🏻
Level Energy 13
6,350.00 kJ / mol34,230.00 kJ / mol
1007
76015
👆🏻
Level Energy 14
1,150.00 kJ / mol37,066.00 kJ / mol
380
86450
👆🏻
Level Energy 15
63,500.00 kJ / mol97,510.00 kJ / mol
33000
100700
👆🏻
Level Energy 16
635.00 kJ / mol105,800.00 kJ / mol
375.7
109480
👆🏻
Level Energy 17
1,107.00 kJ / mol114,300.00 kJ / mol
375.7
122200
👆🏻
Level Energy 18
6,350.00 kJ / mol125,300.00 kJ / mol
0
134810
👆🏻
Level Energy 19
635.00 kJ / mol134,700.00 kJ / mol
375.7
148700
👆🏻
Level Energy 20
635.00 kJ / mol144,300.00 kJ / mol
0
171200
👆🏻
Level Energy 21
6,350.00 kJ / mol157,700.00 kJ / mol
375.7
179100
👆🏻
Level Energy 22
635.00 kJ / mol166,090.00 kJ / mol
330
184900
👆🏻
Level Energy 23rd
6,350.00 kJ / mol653.80 kJ / mol
357.6
198800
👆🏻
Level Energy 24
635.00 kJ / mol653.80 kJ / mol
297.3
195200
👆🏻
Level Energy 25th
635.00 kJ / mol653.80 kJ / mol
0
121900
👆🏻
Level Energy 26th
635.00 kJ / mol653.80 kJ / mol
357.6
127700
👆🏻
Level Energy 27th
635.00 kJ / mol652.90 kJ / mol
0
133800
👆🏻
Level Energy 28th
635.00 kJ / mol653.80 kJ / mol
297.3
139800
👆🏻
Level Energy 29
635.00 kJ / mol653.80 kJ / mol
0
148100
👆🏻
Level Energy 30
635.00 kJ / mol653.80 kJ / mol
0
154500
👆🏻
padha karo elektrokimia
3.21 g / amp-day0.32 g / amp-day
0.16812
8.3209
👆🏻
Fungsi Work elektron
3.89 eV4.50 eV
2.14
6
👆🏻
Properties Kimia liyane
ionisasi, Isotop radioaktif, Radioaktif
anti Corrosion, Kimia Stabilitas, ionisasi, Isotop radioaktif, kelarutan
Panggil atom
10124
3
117
👆🏻
Konfigurasi elektron
[Rn] 5F 13 7s 2
[Ar] 3d 5 4s 1
Struktur Crystal
ora Lake
Body tengah kubik (Bcc)
Crystal pola
atom
Jumlah proton
10124
3
117
👆🏻
Jumlah Neutron
15728
4
285
👆🏻
Jumlah Èlèktron
10124
3
117
👆🏻
Radius saka Atom
Radius atom
175.00 pm128.00 pm
0
348
👆🏻
kovalen Radius
175.00 pm139.00 pm
0
260
👆🏻
Van der Waals Radius
246.00 pm200.00 pm
0
348
👆🏻
Bobot atom
258.00 Amu52.00 Amu
6.94
294
👆🏻
Volume atom
19.90 cm3 / mol7.23 cm3 / mol
1.39
71.07
👆🏻
Nomer atom jejer
unsur Previous
Sabanjure unsur
Potensi Valence Electron
63.70 (-eV)170.00 (-eV)
0
392.42
👆🏻
Constant pola
-291.00 pm
0
891.25
👆🏻
pola Angles
-
π/2, π/2, π/2
Pola C / A rasio
1.581.86
0.423
1.9
👆🏻
Kapadhetan
Kapadhetan Ing suhu kamar
10.30 g / cm 37.19 g / cm 3
0.534
40.7
👆🏻
Kapadhetan Nalika Liquid (ing mp)
10.30 g / cm36.30 g / cm3
0.512
41
👆🏻
Strength tensile
80.00 MPa689.00 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
0.00 (Pa)774.00 (Pa)
0
774
👆🏻
situs kelenturan
nyukur pengaturan
32.00 GPA115.00 GPA
1.3
222
👆🏻
pengaturan akeh
0.00 GPA160.00 GPA
0
462
👆🏻
Young kang pengaturan
12.00 GPA279.00 GPA
0
528
👆🏻
Poisson rasio
0.300.21
0.032
0.47
👆🏻
Properties Teknik liyane
-
-
Ciri Magnetic
Gravitasi tartamtu
13.507.19
0.53
4500
👆🏻
Nindakake Magnetic
-
Antiferromagnetic
permeabilitas
0.00 H / m0.00 H / m
1.25643E-06
0.0063
👆🏻
kelemahan
0.000.00
-0.000166
200000
👆🏻
Properties Listrik
Property Listrik
-
-
resistivity
0.63 nΩ · m125.00 nΩ · m
0.1
961
👆🏻
konduktivitas listrik
0.00 10 6 / cm Ω0.08 10 6 / cm Ω
0
0.63
👆🏻
elektron Affinity
50.00 kJ / mol64.30 kJ / mol
0
222.8
👆🏻
Kalor tartamtu
0.10 J / (kg K)0.45 J / (kg K)
0.1
3.6
👆🏻
Graham Kapasitas kalor
27.00 J / mol · K23.35 J / mol · K
13.1
62.7
👆🏻
doyo termal
0.00 W / m · K93.90 W / m · K
0
429
👆🏻
suhu kritis
1,100.00 K1,907.00 K
26.3
3695
👆🏻
Expansion termal
11.60 μm / (m · K)4.90 μm / (m · K)
4.5
97
👆🏻
enthalpy
Enthalpy panguapan
380.50 kJ / mol348.80 kJ / mol
7.32
799.1
👆🏻
Enthalpy saka Fusion
-15.31 kJ / mol
2.1
35.23
👆🏻
Enthalpy saka atomization
410.80 kJ / mol397.50 kJ / mol
61.5
837
👆🏻
Standard molar Entropy
37.40 J / mol.K23.80 J / mol.K
9.5
198.1
👆🏻