rhodium mungsuh Holmium
Tabel périodik
Symbol
Rh
Ho
Panggil Group
9
9
ora Sumadhiya
Panggil periode
5
6
Block
d block
pemblokiran f
Family unsur
transisi Metal
lanthanide
CAS Number
7440166
99+
7440600
29
Jeneng papan Group
Fm_ 3M
P63 / mmc
Space Group Number
225.00
2
194.00
5
facts
Facts Interesting
- Rhodium punika unsur paling langka metu kabeh logam non-radioaktif ing bumi.
- Rhodium punika salah siji sing paling awet lan hard logam, kang uga duwe reflectance dhuwur.
- metal Holmium sanget alus lan malleable.
- metal Holmium uga dikenal kanggo resistivity sawijining karat.
sumber
bumi lemah ndhuwur, Found Minangka By-produk, Found in Minerals, Mining
Found in Minerals, Mining, Ores saka Minerals
History
sing katutup
William Hyde Wollaston
Marc Delafontaine
Discovery
ing taun 1804
ing taun 1878
turah mbrawah
Turah mbrawah Ing Universe
6 * 10-8 %
26
5 * 10-8 %
27
Turah mbrawah Ing Sun
~0.0000002 %
25
~-9999 %
Turah mbrawah Ing meteorit
0.00 %
36
0.00 %
99+
Turah mbrawah Ing bumi lemah ndhuwur
0.00 %
99+
0.00 %
38
Turah mbrawah Ing Segara
ora Sumadhiya
0.00 %
99+
ulah
Ulah lan Wuku
Character length exceed error
- 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
Industry Aerospace, Industry automobile, Industry Listrik, Industry Elektronik
NA
Ulah Medical
NA
NA
Ulah liyane
wesi
wesi, Nuclear Riset
Properties biologi
keracunan
NA
Low Toxic
Saiki ing badan Human
Ora
Ora
fisik Properties
leleh Point
1,966.00 ° C
12
1,461.00 ° C
30
Boiling Point
3,727.00 ° C
17
2,600.00 ° C
99+
katon
State fisik
Solid
Solid
warna
perak Putih
perak Putih
luster
metallic
metallic
atose
Mohs atose
6.00
6
ora Sumadhiya
Brinell atose
980.00 MPa
9
746.00 MPa
13
Vickers atose
1,100.00 MPa
9
481.00 MPa
23
Kacepetan swara
4,700.00 m / s
15
2,760.00 m / s
30
Properties Optical
reflectivity
84.00 %
4
ora Sumadhiya
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
Rh
Ho
isotop
Isotop dikenal
16
23
34
5
keelektronegatifan
Pauling Elektronegativitas
2.28
3
1.23
37
Allred Rochow Elektronegativitas
1.45
16
1.10
30
Allen Elektronegativitas
1.56
24
ora Sumadhiya
Electropositivity
Pauling Electropositivity
1.72
99+
2.77
17
tenogo ionisasi
Level Energy 1st
719.70 kJ / mol
29
581.00 kJ / mol
99+
Level Energy 2
1,740.00 kJ / mol
26
1,140.00 kJ / mol
99+
Level Energy 3rd
2,997.00 kJ / mol
27
2,204.00 kJ / mol
99+
Level Energy 4
ora Sumadhiya
4,100.00 kJ / mol
34
padha karo elektrokimia
1.28 g / amp-day
99+
2.02 g / amp-day
29
Fungsi Work elektron
4.98 eV
6
ora Sumadhiya
Properties Kimia liyane
anti Corrosion, ionisasi, Isotop radioaktif
Kimia Stabilitas, anti Corrosion, ionisasi, Isotop radioaktif, kelarutan
atom Properties
Panggil atom
45
99+
67
99+
Konfigurasi elektron
[Kr] 4d 8 5S 1
[Xe] 4F 11 6s 2
Struktur Crystal
Face tengah kubik (FCC)
Hexagonal Tutup dikempalken (HCP)
Crystal pola
FCC-Crystal-Structure-of-Rhodium.jpg#100
HCP-Crystal-Structure-of-Holmium.jpg#100
atom
Jumlah proton
45
99+
67
99+
Jumlah Neutron
58
99+
98
34
Jumlah Èlèktron
45
99+
67
99+
Radius saka Atom
Radius atom
134.00 pm
99+
176.00 pm
18
kovalen Radius
142.00 pm
99+
192.00 pm
17
Van der Waals Radius
200.00 pm
28
216.00 pm
24
Bobot atom
102.91 Amu
99+
164.93 Amu
99+
Volume atom
8.30 cm3 / mol
99+
18.70 cm3 / mol
24
Nomer atom jejer
Potensi Valence Electron
64.00 (-eV)
22
47.90 (-eV)
31
Constant pola
380.34 pm
27
357.73 pm
38
pola Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
Pola C / A rasio
ora Sumadhiya
1.57
17
Teknik Properties
Kapadhetan
Kapadhetan Ing suhu kamar
12.41 g / cm 3
28
8.79 g / cm 3
99+
Kapadhetan Nalika Liquid (ing mp)
10.70 g / cm3
14
8.34 g / cm3
26
Strength tensile
951.00 MPa
5
ora Sumadhiya
viskositas
ora Sumadhiya
ora Sumadhiya
meksa beluk
Meksa beluk ing 1000 K
ora Sumadhiya
0.00 (Pa)
16
Meksa beluk ing 2000 K
0.02 (Pa)
19
ora Sumadhiya
situs kelenturan
nyukur pengaturan
150.00 GPA
6
26.30 GPA
28
pengaturan akeh
275.00 GPA
5
40.20 GPA
32
Young kang pengaturan
380.00 GPA
5
64.80 GPA
31
Poisson rasio
0.26
22
0.23
29
Properties Teknik liyane
malleable
ductile, malleable, Sectile
Magnetic Properties
Ciri Magnetic
Gravitasi tartamtu
12.41
20
8.80
35
Nindakake Magnetic
paramagnetic
paramagnetic
Properties Listrik
Property Listrik
Arman
Arman
resistivity
43.30 nΩ · m
99+
814.00 nΩ · m
4
konduktivitas listrik
0.21 10 6 / cm Ω
8
0.01 10 6 / cm Ω
99+
elektron Affinity
109.70 kJ / mol
7
50.00 kJ / mol
21
termal Properties
Kalor tartamtu
0.24 J / (kg K)
22
0.16 J / (kg K)
35
Graham Kapasitas kalor
24.98 J / mol · K
99+
27.15 J / mol · K
19
doyo termal
150.00 W / m · K
9
16.20 W / m · K
99+
suhu kritis
ora Sumadhiya
ora Sumadhiya
Expansion termal
8.20 μm / (m · K)
99+
11.20 μm / (m · K)
35
enthalpy
Enthalpy panguapan
495.40 kJ / mol
12
241.00 kJ / mol
38
Enthalpy saka Fusion
21.76 kJ / mol
10
11.76 kJ / mol
29
Enthalpy saka atomization
556.50 kJ / mol
12
301.00 kJ / mol
36
Standard molar Entropy
31.50 J / mol.K
99+
75.30 J / mol.K
8
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