lanthanum mungsuh Praseodymium
Tabel périodik
Symbol
La
Pr
Panggil Group
ora Sumadhiya
ora Sumadhiya
Panggil periode
6
6
Block
pemblokiran f
pemblokiran f
Family unsur
lanthanide
lanthanide
CAS Number
7439910
99+
7440100
99+
Jeneng papan Group
P63 / mmc
P63 / mmc
Space Group Number
194.00
5
194.00
5
facts
Facts Interesting
- Lanthanum logam punika Highly malleable, ductile lan sectile.
- Yen kapapar logam Lanthanum online oxidizes kanthi cepet.
- 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
Carl Gustaf Mosander
Not Available
Discovery
Wonten ing taun 1838
ing taun 1885
turah mbrawah
Turah mbrawah Ing Universe
2 * 10-7 %
22
2 * 10-7 %
22
Turah mbrawah Ing Sun
~0.0000002 %
25
~0.0000001 %
26
Turah mbrawah Ing meteorit
0.00 %
32
0.00 %
40
Turah mbrawah Ing bumi lemah ndhuwur
0.00 %
19
0.00 %
27
Turah mbrawah Ing Segara
0.00 %
29
0.00 %
39
ulah
Ulah lan Wuku
Character length exceed error
- 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
Industry Listrik, Industry Elektronik
Industri Kimia
Ulah Medical
NA
NA
Ulah liyane
wesi, Manufacturing mirror
wesi
Properties biologi
keracunan
Low Toxic
arep Toxic
Saiki ing badan Human
Ya
Ora
ing Bone
0.08 ppm
24
ora Sumadhiya
fisik Properties
leleh Point
920.00 ° C
99+
935.00 ° C
99+
Boiling Point
3,469.00 ° C
18
3,130.00 ° C
27
katon
State fisik
Solid
Solid
warna
perak Putih
klawu putih
luster
NA
metallic
atose
Mohs atose
2.50
14
ora Sumadhiya
Brinell atose
350.00 MPa
30
481.00 MPa
24
Vickers atose
360.00 MPa
26
400.00 MPa
25
Kacepetan swara
2,475.00 m / s
37
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
La
Pr
isotop
Isotop dikenal
31
8
31
8
keelektronegatifan
Pauling Elektronegativitas
1.10
99+
1.13
99+
Allred Rochow Elektronegativitas
1.08
31
1.07
32
Electropositivity
Pauling Electropositivity
2.90
10
2.87
12
tenogo ionisasi
Level Energy 1st
538.10 kJ / mol
99+
527.00 kJ / mol
99+
Level Energy 2
1,067.00 kJ / mol
99+
1,020.00 kJ / mol
99+
Level Energy 3rd
1,850.30 kJ / mol
99+
2,086.00 kJ / mol
99+
Level Energy 4
4,819.00 kJ / mol
22
3,761.00 kJ / mol
99+
Level Energy 5th
5,940.00 kJ / mol
25
5,551.00 kJ / mol
29
padha karo elektrokimia
1.73 g / amp-day
99+
1.75 g / amp-day
40
Fungsi Work elektron
3.50 eV
31
2.70 eV
99+
Properties Kimia liyane
ionisasi, Isotop radioaktif, kelarutan
anti Corrosion, ionisasi, Isotop radioaktif
atom Properties
Panggil atom
57
99+
59
99+
Konfigurasi elektron
[Xe] 5d 2 6s 2
[Xe] 4F 3 6s 2
Struktur Crystal
Double Hexagonal Tutup dikempalken (DHCP)
Hexagonal Tutup dikempalken (HCP)
Crystal pola
DHCP-Crystal-Structure-of-Lanthanum.jpg#100
HCP-Crystal-Structure-of-Praseodymium.jpg#100
atom
Jumlah proton
57
99+
59
99+
Jumlah Neutron
82
99+
82
99+
Jumlah Èlèktron
57
99+
59
99+
Radius saka Atom
Radius atom
187.00 pm
8
182.00 pm
11
kovalen Radius
207.00 pm
6
203.00 pm
9
Van der Waals Radius
240.00 pm
13
239.00 pm
14
Bobot atom
138.91 Amu
99+
140.91 Amu
99+
Volume atom
20.73 cm3 / mol
16
20.80 cm3 / mol
15
Nomer atom jejer
Potensi Valence Electron
40.71 (-eV)
99+
42.64 (-eV)
99+
Constant pola
377.20 pm
28
367.25 pm
29
pola Angles
π/2, π/2, 2 π/3
π/2, π/2, 2 π/3
Pola C / A rasio
1.62
2
1.61
4
Teknik Properties
Kapadhetan
Kapadhetan Ing suhu kamar
6.16 g / cm 3
99+
6.77 g / cm 3
99+
Kapadhetan Nalika Liquid (ing mp)
5.94 g / cm3
99+
6.50 g / cm3
39
Strength tensile
ora Sumadhiya
ora Sumadhiya
viskositas
ora Sumadhiya
ora Sumadhiya
meksa beluk
Meksa beluk ing 1000 K
ora Sumadhiya
0.00 (Pa)
25
Meksa beluk ing 2000 K
0.98 (Pa)
15
13.20 (Pa)
7
situs kelenturan
nyukur pengaturan
14.30 GPA
40
14.80 GPA
39
pengaturan akeh
27.90 GPA
99+
28.80 GPA
40
Young kang pengaturan
36.60 GPA
99+
37.30 GPA
99+
Poisson rasio
0.28
17
0.28
16
Properties Teknik liyane
ductile
ductile, malleable
Magnetic Properties
Ciri Magnetic
Gravitasi tartamtu
6.17
99+
6.77
99+
Nindakake Magnetic
paramagnetic
paramagnetic
Properties Listrik
Property Listrik
Arman
Arman
resistivity
615.00 nΩ · m
7
0.70 nΩ · m
99+
konduktivitas listrik
0.01 10 6 / cm Ω
99+
0.01 10 6 / cm Ω
99+
elektron Affinity
48.00 kJ / mol
23
50.00 kJ / mol
21
termal Properties
Kalor tartamtu
0.19 J / (kg K)
32
0.19 J / (kg K)
32
Graham Kapasitas kalor
27.11 J / mol · K
21
27.20 J / mol · K
18
doyo termal
13.40 W / m · K
99+
12.50 W / m · K
99+
suhu kritis
ora Sumadhiya
ora Sumadhiya
Expansion termal
12.10 μm / (m · K)
32
6.70 μm / (m · K)
99+
enthalpy
Enthalpy panguapan
399.60 kJ / mol
17
296.80 kJ / mol
29
Enthalpy saka Fusion
6.20 kJ / mol
99+
6.89 kJ / mol
99+
Enthalpy saka atomization
431.00 kJ / mol
16
368.00 kJ / mol
24
Standard molar Entropy
56.90 J / mol.K
23
73.20 J / mol.K
10
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