lanthanum mungsuh iridium
Tabel périodik
Symbol
La
Ir
Panggil Group
ora Sumadhiya
9
9
Panggil periode
6
6
Block
pemblokiran f
d block
Family unsur
lanthanide
transisi Metal
CAS Number
7439910
99+
7439885
99+
Jeneng papan Group
P63 / mmc
Fm_ 3M
Space Group Number
194.00
5
225.00
2
facts
Facts Interesting
- Lanthanum logam punika Highly malleable, ductile lan sectile.
- Yen kapapar logam Lanthanum online oxidizes kanthi cepet.
- unsur Iridium occurs minangka wesi alam Platinum lan Osmium.
- unsur Iridium dikenal minangka paling metal resistance karat.
sumber
Found in Minerals, Mining, Ores saka Minerals
Found in Minerals, Mining, Ores saka Minerals
History
sing katutup
Carl Gustaf Mosander
Smithson Tennant
Discovery
Wonten ing taun 1838
ing 1803
turah mbrawah
Turah mbrawah Ing Universe
2 * 10-7 %
22
2 * 10-7 %
22
Turah mbrawah Ing Sun
~0.0000002 %
25
~0.0000002 %
25
Turah mbrawah Ing meteorit
0.00 %
32
0.00 %
29
Turah mbrawah Ing bumi lemah ndhuwur
0.00 %
19
0.00 %
99+
Turah mbrawah Ing Segara
0.00 %
29
ora Sumadhiya
ulah
Ulah lan Wuku
Character length exceed error
- Iridium duwe sifat anti karat lan digunakake ing alloy khusus karo logam Osmium lan alloy sing digunakake ing tips pen lan Compass bantalan poros.
Ulah Industrial
Industry Listrik, Industry Elektronik
Industry automobile, Industry Listrik, Industry Elektronik
Ulah Medical
NA
NA
Ulah liyane
wesi, Manufacturing mirror
wesi
Properties biologi
keracunan
Low Toxic
Toxic
Saiki ing badan Human
Ya
Ya
ing Bone
0.08 ppm
24
ora Sumadhiya
fisik Properties
leleh Point
920.00 ° C
99+
2,410.00 ° C
7
Boiling Point
3,469.00 ° C
18
4,527.00 ° C
10
katon
State fisik
Solid
Solid
warna
perak Putih
perak Putih
luster
NA
metallic
atose
Mohs atose
2.50
14
6.50
5
Brinell atose
350.00 MPa
30
1,670.00 MPa
5
Vickers atose
360.00 MPa
26
1,760.00 MPa
3
Kacepetan swara
2,475.00 m / s
37
4,825.00 m / s
13
Properties Optical
reflectivity
ora Sumadhiya
78.00 %
6
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
La
Ir
isotop
Isotop dikenal
31
8
34
5
keelektronegatifan
Pauling Elektronegativitas
1.10
99+
2.20
4
Allred Rochow Elektronegativitas
1.08
31
1.55
11
Allen Elektronegativitas
ora Sumadhiya
1.68
17
Electropositivity
Pauling Electropositivity
2.90
10
1.80
99+
tenogo ionisasi
Level Energy 1st
538.10 kJ / mol
99+
880.00 kJ / mol
9
Level Energy 2
1,067.00 kJ / mol
99+
1,600.00 kJ / mol
35
Level Energy 3rd
1,850.30 kJ / mol
99+
ora Sumadhiya
Level Energy 4
4,819.00 kJ / mol
22
ora Sumadhiya
Level Energy 5th
5,940.00 kJ / mol
25
ora Sumadhiya
padha karo elektrokimia
1.73 g / amp-day
99+
1.14 g / amp-day
99+
Fungsi Work elektron
3.50 eV
31
4.55 eV
13
Properties Kimia liyane
ionisasi, Isotop radioaktif, kelarutan
kebakar, ionisasi, Isotop radioaktif, Radioaktif
atom Properties
Panggil atom
57
99+
77
39
Konfigurasi elektron
[Xe] 5d 2 6s 2
[Xe] 4F 14 5d 7 6s 2
Struktur Crystal
Double Hexagonal Tutup dikempalken (DHCP)
Face tengah kubik (FCC)
Crystal pola
DHCP-Crystal-Structure-of-Lanthanum.jpg#100
FCC-Crystal-Structure-of-Iridium.jpg#100
atom
Jumlah proton
57
99+
74
99+
Jumlah Neutron
82
99+
110
27
Jumlah Èlèktron
57
99+
74
99+
Radius saka Atom
Radius atom
187.00 pm
8
136.00 pm
99+
kovalen Radius
207.00 pm
6
141.00 pm
99+
Van der Waals Radius
240.00 pm
13
202.00 pm
27
Bobot atom
138.91 Amu
99+
192.22 Amu
34
Volume atom
20.73 cm3 / mol
16
9.53 cm3 / mol
99+
Nomer atom jejer
Potensi Valence Electron
40.71 (-eV)
99+
140.00 (-eV)
5
Constant pola
377.20 pm
28
383.90 pm
26
pola Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
Pola C / A rasio
1.62
2
ora Sumadhiya
Teknik Properties
Kapadhetan
Kapadhetan Ing suhu kamar
6.16 g / cm 3
99+
22.56 g / cm 3
10
Kapadhetan Nalika Liquid (ing mp)
5.94 g / cm3
99+
19.00 g / cm3
3
Strength tensile
ora Sumadhiya
2,000.00 MPa
2
viskositas
ora Sumadhiya
ora Sumadhiya
meksa beluk
Meksa beluk ing 2000 K
0.98 (Pa)
15
0.00 (Pa)
25
situs kelenturan
nyukur pengaturan
14.30 GPA
40
210.00 GPA
2
pengaturan akeh
27.90 GPA
99+
320.00 GPA
3
Young kang pengaturan
36.60 GPA
99+
528.00 GPA
1
Poisson rasio
0.28
17
0.26
22
Properties Teknik liyane
ductile
NA
Magnetic Properties
Ciri Magnetic
Gravitasi tartamtu
6.17
99+
21.78
3
Nindakake Magnetic
paramagnetic
paramagnetic
Properties Listrik
Property Listrik
Arman
Arman
resistivity
615.00 nΩ · m
7
47.10 nΩ · m
99+
konduktivitas listrik
0.01 10 6 / cm Ω
99+
0.19 10 6 / cm Ω
10
elektron Affinity
48.00 kJ / mol
23
151.00 kJ / mol
4
termal Properties
Kalor tartamtu
0.19 J / (kg K)
32
0.13 J / (kg K)
39
Graham Kapasitas kalor
27.11 J / mol · K
21
25.10 J / mol · K
99+
doyo termal
13.40 W / m · K
99+
147.00 W / m · K
10
suhu kritis
ora Sumadhiya
ora Sumadhiya
Expansion termal
12.10 μm / (m · K)
32
6.40 μm / (m · K)
99+
enthalpy
Enthalpy panguapan
399.60 kJ / mol
17
799.10 kJ / mol
1
Enthalpy saka Fusion
6.20 kJ / mol
99+
35.23 kJ / mol
1
Enthalpy saka atomization
431.00 kJ / mol
16
837.00 kJ / mol
1
Standard molar Entropy
56.90 J / mol.K
23
35.50 J / mol.K
99+
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