Symbol
Pa
Cr
Panggil Group
36
0
17
👆🏻
Panggil periode
74
2
7
👆🏻
Block
pemblokiran f
d block
Family unsur
actinide
transisi Metal
CAS Number
74401337440473
7429905
54386242
👆🏻
Jeneng papan Group
I4 / mmm
3M Im_
Space Group Number
139.00229.00
11
276
👆🏻
Facts Interesting
- metal Protaktinium wis 29 isotop.
- Isotop saka Protaktinium-231 digunakake ing gegaman nuklir.
- 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
Found in Ores Uranium, Mining, Ores logam
Found in Minerals, Mining, Ores logam, Ores saka Minerals
History
sing katutup
William Crookes
Louis Nicolas Vauquelin
Discovery
ing taun 1900
Ing Antarane 1797 - 1798
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
22
👆🏻
Turah mbrawah Ing bumi lemah ndhuwur
0.00 %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
- Efesus saiki dikenal saka logam Protaktinium 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
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
1,568.00 ° C1,857.00 ° C
-38.83
3410
👆🏻
Boiling Point
4,027.00 ° C2,672.00 ° C
0
5660
👆🏻
katon
State fisik
Solid
Solid
warna
Silver
Silver
luster
metallic
metallic
atose
Mohs atose
5.008.50
0.2
8.5
👆🏻
Brinell atose
125.00 MPa687.00 MPa
0.14
3490
👆🏻
Vickers atose
220.00 MPa1,060.00 MPa
0
3920
👆🏻
Kacepetan swara
12,400.00 m / s5,940.00 m / s
818
16200
👆🏻
Properties Optical
bias Index
1.602.97
0.155
3.41
👆🏻
reflectivity
60.00 %70.00 %
5
97
👆🏻
allotropes
Ora
Ora
α allotropes
-
-
β allotropes
-
-
γ allotropes
-
-
Formula Kimia
Pa
Cr
isotop
Isotop dikenal
2721
0
38
👆🏻
keelektronegatifan
Pauling Elektronegativitas
1.501.66
0
2.6
👆🏻
Sanderson Elektronegativitas
1.501.66
0.22
2.56
👆🏻
Allred Rochow Elektronegativitas
1.141.56
0.86
1.9
👆🏻
Mulliken-Jaffe Elektronegativitas
1.501.66
0.62
2.48
👆🏻
Allen Elektronegativitas
1.501.65
0.659
2.7
👆🏻
Electropositivity
Pauling Electropositivity
2.502.34
1.46
3.3
👆🏻
tenogo ionisasi
Level Energy 1st
568.00 kJ / mol26,130.00 kJ / mol
375.7
26130
👆🏻
Level Energy 2
1,128.00 kJ / mol28,750.00 kJ / mol
392.8
28750
👆🏻
Level Energy 3rd
1,814.00 kJ / mol34,230.00 kJ / mol
392.8
34230
👆🏻
Level Energy 4
2,991.00 kJ / mol37,066.00 kJ / mol
375.7
37066
👆🏻
Level Energy 5th
5,120.00 kJ / mol97,510.00 kJ / mol
392
97510
👆🏻
Level Energy 6th
5,680.00 kJ / mol105,800.00 kJ / mol
1007
105800
👆🏻
tingkat Energy 7
5,680.00 kJ / mol114,300.00 kJ / mol
1007
114300
👆🏻
Level Energy 8
5,680.00 kJ / mol125,300.00 kJ / mol
730
125300
👆🏻
Level Energy 9
5,120.00 kJ / mol134,700.00 kJ / mol
1007
134700
👆🏻
Level Energy 10th
5,120.00 kJ / mol144,300.00 kJ / mol
392
144300
👆🏻
Level Energy 11
5,680.00 kJ / mol26,130.00 kJ / mol
392
169988
👆🏻
Level Energy 12
5,680.00 kJ / mol28,750.00 kJ / mol
0
189368
👆🏻
Level Energy 13
5,680.00 kJ / mol34,230.00 kJ / mol
1007
76015
👆🏻
Level Energy 14
5,680.00 kJ / mol37,066.00 kJ / mol
380
86450
👆🏻
Level Energy 15
56,800.00 kJ / mol97,510.00 kJ / mol
33000
100700
👆🏻
Level Energy 16
56,800.00 kJ / mol105,800.00 kJ / mol
375.7
109480
👆🏻
Level Energy 17
568.50 kJ / mol114,300.00 kJ / mol
375.7
122200
👆🏻
Level Energy 18
5,680.00 kJ / mol125,300.00 kJ / mol
0
134810
👆🏻
Level Energy 19
568.30 kJ / mol134,700.00 kJ / mol
375.7
148700
👆🏻
Level Energy 20
568.00 kJ / mol144,300.00 kJ / mol
0
171200
👆🏻
Level Energy 21
568.00 kJ / mol157,700.00 kJ / mol
375.7
179100
👆🏻
Level Energy 22
568.00 kJ / mol166,090.00 kJ / mol
330
184900
👆🏻
Level Energy 23rd
568.00 kJ / mol653.80 kJ / mol
357.6
198800
👆🏻
Level Energy 24
568.00 kJ / mol653.80 kJ / mol
297.3
195200
👆🏻
Level Energy 25th
568.00 kJ / mol653.80 kJ / mol
0
121900
👆🏻
Level Energy 26th
568.00 kJ / mol653.80 kJ / mol
357.6
127700
👆🏻
Level Energy 27th
568.00 kJ / mol652.90 kJ / mol
0
133800
👆🏻
Level Energy 28th
568.00 kJ / mol653.80 kJ / mol
297.3
139800
👆🏻
Level Energy 29
568.00 kJ / mol653.80 kJ / mol
0
148100
👆🏻
Level Energy 30
568.00 kJ / mol653.80 kJ / mol
0
154500
👆🏻
padha karo elektrokimia
1.72 g / amp-day0.32 g / amp-day
0.16812
8.3209
👆🏻
Fungsi Work elektron
5.89 eV4.50 eV
2.14
6
👆🏻
Properties Kimia liyane
ionisasi, Isotop radioaktif, Radioaktif
anti Corrosion, Kimia Stabilitas, ionisasi, Isotop radioaktif, kelarutan
Panggil atom
9124
3
117
👆🏻
Konfigurasi elektron
[Rn] 5F 2 6D 1 7s 2
[Ar] 3d 5 4s 1
Struktur Crystal
Tetragonal (TETR)
Body tengah kubik (Bcc)
Crystal pola
atom
Jumlah proton
9124
3
117
👆🏻
Jumlah Neutron
12228
4
285
👆🏻
Jumlah Èlèktron
9124
3
117
👆🏻
Radius saka Atom
Radius atom
163.00 pm128.00 pm
0
348
👆🏻
kovalen Radius
200.00 pm139.00 pm
0
260
👆🏻
Van der Waals Radius
243.00 pm200.00 pm
0
348
👆🏻
Bobot atom
231.04 Amu52.00 Amu
6.94
294
👆🏻
Volume atom
15.00 cm3 / mol7.23 cm3 / mol
1.39
71.07
👆🏻
Nomer atom jejer
unsur Previous
Sabanjure unsur
Potensi Valence Electron
92.00 (-eV)170.00 (-eV)
0
392.42
👆🏻
Constant pola
392.50 pm291.00 pm
0
891.25
👆🏻
pola Angles
π/2, π/2, π/2
π/2, π/2, π/2
Pola C / A rasio
1.581.86
0.423
1.9
👆🏻
Kapadhetan
Kapadhetan Ing suhu kamar
15.37 g / cm 37.19 g / cm 3
0.534
40.7
👆🏻
Kapadhetan Nalika Liquid (ing mp)
15.37 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
16.00 GPA115.00 GPA
1.3
222
👆🏻
pengaturan akeh
47.00 GPA160.00 GPA
0
462
👆🏻
Young kang pengaturan
47.00 GPA279.00 GPA
0
528
👆🏻
Poisson rasio
0.230.21
0.032
0.47
👆🏻
Properties Teknik liyane
-
-
Ciri Magnetic
Gravitasi tartamtu
15.377.19
0.53
4500
👆🏻
Nindakake Magnetic
paramagnetic
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
Arman
-
resistivity
177.00 nΩ · m125.00 nΩ · m
0.1
961
👆🏻
konduktivitas listrik
0.05 10 6 / cm Ω0.08 10 6 / cm Ω
0
0.63
👆🏻
elektron Affinity
53.03 kJ / mol64.30 kJ / mol
0
222.8
👆🏻
Kalor tartamtu
0.12 J / (kg K)0.45 J / (kg K)
0.1
3.6
👆🏻
Graham Kapasitas kalor
27.20 J / mol · K23.35 J / mol · K
13.1
62.7
👆🏻
doyo termal
47.00 W / m · K93.90 W / m · K
0
429
👆🏻
suhu kritis
1,841.00 K1,907.00 K
26.3
3695
👆🏻
Expansion termal
9.90 μm / (m · K)4.90 μm / (m · K)
4.5
97
👆🏻
enthalpy
Enthalpy panguapan
481.00 kJ / mol348.80 kJ / mol
7.32
799.1
👆🏻
Enthalpy saka Fusion
12.34 kJ / mol15.31 kJ / mol
2.1
35.23
👆🏻
Enthalpy saka atomization
481.90 kJ / mol397.50 kJ / mol
61.5
837
👆🏻
Standard molar Entropy
198.10 J / mol.K23.80 J / mol.K
9.5
198.1
👆🏻