cerium mungsuh Holmium
Tabel périodik
Symbol
Ce
Ho
Panggil Group
ora Sumadhiya
ora Sumadhiya
Panggil periode
6
6
Block
pemblokiran f
pemblokiran f
Family unsur
lanthanide
lanthanide
CAS Number
7440451
99+
7440600
29
Jeneng papan Group
P63 / mmc
P63 / mmc
Space Group Number
194.00
5
194.00
5
facts
Facts Interesting
Character length exceed error
- metal Holmium sanget alus lan malleable.
- metal Holmium uga dikenal kanggo resistivity sawijining karat.
sumber
Found in Minerals, Mining, Ores saka Minerals
Found in Minerals, Mining, Ores saka Minerals
History
sing katutup
Martin Heinrich Klaproth, Jöns Jakob Berzelius, Wilhelm Hisinger
Marc Delafontaine
Discovery
ing 1803
ing taun 1878
turah mbrawah
Turah mbrawah Ing Universe
1 * 10-6 %
16
5 * 10-8 %
27
Turah mbrawah Ing Sun
~0.0000004 %
23
~-9999 %
Turah mbrawah Ing meteorit
0.00 %
27
0.00 %
99+
Turah mbrawah Ing bumi lemah ndhuwur
0.01 %
18
0.00 %
38
Turah mbrawah Ing Segara
0.00 %
33
0.00 %
99+
ulah
Ulah lan Wuku
- 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.
- 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.
Ulah Industrial
Industri Kimia
NA
Ulah Medical
Medical Research
NA
Ulah liyane
wesi
wesi, Nuclear Riset
Properties biologi
keracunan
arep Toxic
Low Toxic
Saiki ing badan Human
Ya
Ora
Sang
0.00 Sang / mg dm-3
30
ora Sumadhiya
ing Bone
2.70 ppm
14
ora Sumadhiya
fisik Properties
leleh Point
795.00 ° C
99+
1,461.00 ° C
30
Boiling Point
3,257.00 ° C
23
2,600.00 ° C
99+
katon
State fisik
Solid
Solid
warna
perak Putih
perak Putih
luster
lustrous
metallic
atose
Mohs atose
2.50
14
ora Sumadhiya
Brinell atose
186.00 MPa
99+
746.00 MPa
13
Vickers atose
210.00 MPa
32
481.00 MPa
23
Kacepetan swara
2,100.00 m / s
99+
2,760.00 m / s
30
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
Ce
Ho
isotop
Isotop dikenal
30
9
34
5
keelektronegatifan
Pauling Elektronegativitas
1.12
99+
1.23
37
Allred Rochow Elektronegativitas
1.08
31
1.10
30
Electropositivity
Pauling Electropositivity
2.88
11
2.77
17
tenogo ionisasi
Level Energy 1st
534.40 kJ / mol
99+
581.00 kJ / mol
99+
Level Energy 2
1,050.00 kJ / mol
99+
1,140.00 kJ / mol
99+
Level Energy 3rd
1,949.00 kJ / mol
99+
2,204.00 kJ / mol
99+
Level Energy 4
3,547.00 kJ / mol
99+
4,100.00 kJ / mol
34
Level Energy 5th
6,325.00 kJ / mol
22
ora Sumadhiya
Level Energy 6th
7,490.00 kJ / mol
21
ora Sumadhiya
padha karo elektrokimia
1.74 g / amp-day
99+
2.02 g / amp-day
29
Fungsi Work elektron
2.84 eV
39
ora Sumadhiya
Properties Kimia liyane
Kimia Stabilitas, anti Corrosion, ionisasi, Isotop radioaktif, kelarutan
Kimia Stabilitas, anti Corrosion, ionisasi, Isotop radioaktif, kelarutan
atom Properties
Panggil atom
58
99+
67
99+
Konfigurasi elektron
[Xe] 4F 1 5d 1 6s 2
[Xe] 4F 11 6s 2
Struktur Crystal
Double Hexagonal Tutup dikempalken (DHCP)
Hexagonal Tutup dikempalken (HCP)
Crystal pola
DHCP-Crystal-Structure-of-Cerium.jpg#100
HCP-Crystal-Structure-of-Holmium.jpg#100
atom
Jumlah proton
58
99+
67
99+
Jumlah Neutron
82
99+
98
34
Jumlah Èlèktron
58
99+
67
99+
Radius saka Atom
Radius atom
181.80 pm
12
176.00 pm
18
kovalen Radius
204.00 pm
8
192.00 pm
17
Van der Waals Radius
235.00 pm
17
216.00 pm
24
Bobot atom
140.12 Amu
99+
164.93 Amu
99+
Volume atom
20.67 cm3 / mol
17
18.70 cm3 / mol
24
Nomer atom jejer
Potensi Valence Electron
41.78 (-eV)
99+
47.90 (-eV)
31
Constant pola
362.00 pm
34
357.73 pm
38
pola Angles
π/2, π/2, 2 π/3
π/2, π/2, 2 π/3
Pola C / A rasio
ora Sumadhiya
1.57
17
Teknik Properties
Kapadhetan
Kapadhetan Ing suhu kamar
6.77 g / cm 3
99+
8.79 g / cm 3
99+
Kapadhetan Nalika Liquid (ing mp)
6.55 g / cm3
38
8.34 g / cm3
26
Strength tensile
ora Sumadhiya
ora Sumadhiya
viskositas
ora Sumadhiya
ora Sumadhiya
meksa beluk
Meksa beluk ing 1000 K
0.00 (Pa)
34
0.00 (Pa)
16
Meksa beluk ing 2000 K
1.04 (Pa)
13
ora Sumadhiya
situs kelenturan
nyukur pengaturan
13.50 GPA
99+
26.30 GPA
28
pengaturan akeh
21.50 GPA
99+
40.20 GPA
32
Young kang pengaturan
33.60 GPA
99+
64.80 GPA
31
Poisson rasio
0.24
27
0.23
29
Properties Teknik liyane
ductile, malleable
ductile, malleable, Sectile
Magnetic Properties
Ciri Magnetic
Gravitasi tartamtu
6.77
99+
8.80
35
Nindakake Magnetic
paramagnetic
paramagnetic
Properties Listrik
Property Listrik
Arman
Arman
resistivity
828.00 nΩ · m
3
814.00 nΩ · m
4
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
0.19 J / (kg K)
32
0.16 J / (kg K)
35
Graham Kapasitas kalor
26.94 J / mol · K
23
27.15 J / mol · K
19
doyo termal
11.30 W / m · K
99+
16.20 W / m · K
99+
suhu kritis
ora Sumadhiya
ora Sumadhiya
Expansion termal
6.30 μm / (m · K)
99+
11.20 μm / (m · K)
35
enthalpy
Enthalpy panguapan
414.00 kJ / mol
16
241.00 kJ / mol
38
Enthalpy saka Fusion
5.46 kJ / mol
99+
11.76 kJ / mol
29
Enthalpy saka atomization
381.00 kJ / mol
23
301.00 kJ / mol
36
Standard molar Entropy
72.00 J / mol.K
12
75.30 J / mol.K
8
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