Holmium mungsuh Praseodymium
Tabel périodik
Symbol
Ho
Pr
Panggil Group
ora Sumadhiya
ora Sumadhiya
Panggil periode
6
6
Block
pemblokiran f
pemblokiran f
Family unsur
lanthanide
lanthanide
CAS Number
7440600
29
7440100
99+
Jeneng papan Group
P63 / mmc
P63 / mmc
Space Group Number
194.00
5
194.00
5
facts
Facts Interesting
- metal Holmium sanget alus lan malleable.
- metal Holmium uga dikenal kanggo resistivity sawijining karat.
- Praseodymium logam sintetik diprodhuksi logam.
- Praseodymium digunakake minangka bahan bakar kanggo generator radioaktif.
sumber
Found in Minerals, Mining, Ores saka Minerals
Found in Minerals, Mining, Ores saka Minerals
History
sing katutup
Marc Delafontaine
Not Available
Discovery
ing taun 1878
ing taun 1885
turah mbrawah
Turah mbrawah Ing Universe
5 * 10-8 %
27
2 * 10-7 %
22
Turah mbrawah Ing Sun
~-9999 %
~0.0000001 %
26
Turah mbrawah Ing meteorit
0.00 %
99+
0.00 %
40
Turah mbrawah Ing bumi lemah ndhuwur
0.00 %
38
0.00 %
27
Turah mbrawah Ing Segara
0.00 %
99+
0.00 %
39
ulah
Ulah lan Wuku
- metal Holmium duwe kemampuan kanggo nresep neutron, supaya logam iki digunakake ing reaktor nuklir kanggo njaga reaksi berantai saka unsur ing kontrol.
- Wesi saka Holmium digunakake kanggo gawé Magnet.
- Gunakake utama Praseodymium kalebu wesi. Praseodymium -Magnesium alloy digunakake ing mesin pesawat amarga kekuatan dhuwur.
- metal iki uga digunakake nalika nggawe wesi sembrani permanen.
Ulah Industrial
NA
Industri Kimia
Ulah Medical
NA
NA
Ulah liyane
wesi, Nuclear Riset
wesi
Properties biologi
keracunan
Low Toxic
arep Toxic
Saiki ing badan Human
Ora
Ora
fisik Properties
leleh Point
1,461.00 ° C
30
935.00 ° C
99+
Boiling Point
2,600.00 ° C
99+
3,130.00 ° C
27
katon
State fisik
Solid
Solid
warna
perak Putih
klawu putih
luster
metallic
metallic
atose
Brinell atose
746.00 MPa
13
481.00 MPa
24
Vickers atose
481.00 MPa
23
400.00 MPa
25
Kacepetan swara
2,760.00 m / s
30
2,280.00 m / s
40
Properties Optical
allotropes
Ora
Ora
α allotropes
ora Sumadhiya
ora Sumadhiya
β allotropes
ora Sumadhiya
ora Sumadhiya
γ allotropes
ora Sumadhiya
ora Sumadhiya
Kimia Properties
Formula Kimia
Ho
Pr
isotop
Isotop dikenal
34
5
31
8
keelektronegatifan
Pauling Elektronegativitas
1.23
37
1.13
99+
Allred Rochow Elektronegativitas
1.10
30
1.07
32
Electropositivity
Pauling Electropositivity
2.77
17
2.87
12
tenogo ionisasi
Level Energy 1st
581.00 kJ / mol
99+
527.00 kJ / mol
99+
Level Energy 2
1,140.00 kJ / mol
99+
1,020.00 kJ / mol
99+
Level Energy 3rd
2,204.00 kJ / mol
99+
2,086.00 kJ / mol
99+
Level Energy 4
4,100.00 kJ / mol
34
3,761.00 kJ / mol
99+
Level Energy 5th
ora Sumadhiya
5,551.00 kJ / mol
29
padha karo elektrokimia
2.02 g / amp-day
29
1.75 g / amp-day
40
Fungsi Work elektron
ora Sumadhiya
2.70 eV
99+
Properties Kimia liyane
Kimia Stabilitas, anti Corrosion, ionisasi, Isotop radioaktif, kelarutan
anti Corrosion, ionisasi, Isotop radioaktif
atom Properties
Panggil atom
67
99+
59
99+
Konfigurasi elektron
[Xe] 4F 11 6s 2
[Xe] 4F 3 6s 2
Struktur Crystal
Hexagonal Tutup dikempalken (HCP)
Hexagonal Tutup dikempalken (HCP)
Crystal pola
HCP-Crystal-Structure-of-Holmium.jpg#100
HCP-Crystal-Structure-of-Praseodymium.jpg#100
atom
Jumlah proton
67
99+
59
99+
Jumlah Neutron
98
34
82
99+
Jumlah Èlèktron
67
99+
59
99+
Radius saka Atom
Radius atom
176.00 pm
18
182.00 pm
11
kovalen Radius
192.00 pm
17
203.00 pm
9
Van der Waals Radius
216.00 pm
24
239.00 pm
14
Bobot atom
164.93 Amu
99+
140.91 Amu
99+
Volume atom
18.70 cm3 / mol
24
20.80 cm3 / mol
15
Nomer atom jejer
Potensi Valence Electron
47.90 (-eV)
31
42.64 (-eV)
99+
Constant pola
357.73 pm
38
367.25 pm
29
pola Angles
π/2, π/2, 2 π/3
π/2, π/2, 2 π/3
Pola C / A rasio
1.57
17
1.61
4
Teknik Properties
Kapadhetan
Kapadhetan Ing suhu kamar
8.79 g / cm 3
99+
6.77 g / cm 3
99+
Kapadhetan Nalika Liquid (ing mp)
8.34 g / cm3
26
6.50 g / cm3
39
Strength tensile
ora Sumadhiya
ora Sumadhiya
viskositas
ora Sumadhiya
ora Sumadhiya
meksa beluk
Meksa beluk ing 1000 K
0.00 (Pa)
16
0.00 (Pa)
25
Meksa beluk ing 2000 K
ora Sumadhiya
13.20 (Pa)
7
situs kelenturan
nyukur pengaturan
26.30 GPA
28
14.80 GPA
39
pengaturan akeh
40.20 GPA
32
28.80 GPA
40
Young kang pengaturan
64.80 GPA
31
37.30 GPA
99+
Poisson rasio
0.23
29
0.28
16
Properties Teknik liyane
ductile, malleable, Sectile
ductile, malleable
Magnetic Properties
Ciri Magnetic
Gravitasi tartamtu
8.80
35
6.77
99+
Nindakake Magnetic
paramagnetic
paramagnetic
Properties Listrik
Property Listrik
Arman
Arman
resistivity
814.00 nΩ · m
4
0.70 nΩ · m
99+
konduktivitas listrik
0.01 10 6 / cm Ω
99+
0.01 10 6 / cm Ω
99+
elektron Affinity
50.00 kJ / mol
21
50.00 kJ / mol
21
termal Properties
Kalor tartamtu
0.16 J / (kg K)
35
0.19 J / (kg K)
32
Graham Kapasitas kalor
27.15 J / mol · K
19
27.20 J / mol · K
18
doyo termal
16.20 W / m · K
99+
12.50 W / m · K
99+
suhu kritis
ora Sumadhiya
ora Sumadhiya
Expansion termal
11.20 μm / (m · K)
35
6.70 μm / (m · K)
99+
enthalpy
Enthalpy panguapan
241.00 kJ / mol
38
296.80 kJ / mol
29
Enthalpy saka Fusion
11.76 kJ / mol
29
6.89 kJ / mol
99+
Enthalpy saka atomization
301.00 kJ / mol
36
368.00 kJ / mol
24
Standard molar Entropy
75.30 J / mol.K
8
73.20 J / mol.K
10
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