mbandhingaké Radium lan Niobium
Tabel périodik
Symbol
Ra
Nb
Panggil Group
2
16
5
13
Panggil periode
7
5
Block
s pemblokiran
d block
Family unsur
alkalin bumi
transisi Metal
CAS Number
7440144
99+
7440031
99+
Jeneng papan Group
3M Im_
3M Im_
Space Group Number
229.00
1
229.00
1
facts
Facts Interesting
- metal Radium punika logam abot saka Alkaline logam bumi asli.
- Radium logam punika Highly radioaktif lan ora duwe tengen mangiwa.
- metal Niobium iki digunakake kanggo njaluk disebut Columbium ing past.
- metal Niobium ketemu ing alam bebas (turah mbrawah).
sumber
Mining, Ores logam
Miturut-produk saka Tin Extraction, Found in Minerals, Mining, Ores saka Minerals
History
sing katutup
Not Available
Charles Hatchett
Discovery
ing taun 1898
ing taun 1801
turah mbrawah
Turah mbrawah Ing Universe
ora Sumadhiya
2 * 10-7 %
22
Turah mbrawah Ing Sun
~-9999 %
~0.0000004 %
23
Turah mbrawah Ing meteorit
ora Sumadhiya
0.00 %
35
Turah mbrawah Ing bumi lemah ndhuwur
0.00 %
99+
0.00 %
25
Turah mbrawah Ing Segara
0.00 %
99+
0.00 %
34
Turah mbrawah Ing Manungsa
0.00 %
20
ora Sumadhiya
ulah
Ulah lan Wuku
- Punika logam Highly radioaktif; lan arang-arang Radium-223 digunakake kanggo nambani kanker prostat.
- Kang digunakake ing cat cetha.
Character length exceed error
Ulah Industrial
NA
Industry Aerospace, Industry amunisi, Industry Listrik, Industry Elektronik
Ulah Medical
Industry Pharmaceutical
NA
Ulah liyane
NA
wesi
Properties biologi
keracunan
Highly Toxic
Low Toxic
Saiki ing badan Human
Ora
Ya
Sang
ora Sumadhiya
0.01 Sang / mg dm-3
25
ing Bone
ora Sumadhiya
0.07 ppm
25
fisik Properties
leleh Point
700.00 ° C
99+
2,468.00 ° C
6
Boiling Point
1,737.00 ° C
99+
2,468.00 ° C
99+
katon
State fisik
Solid
Solid
warna
perak Putih
Gray
luster
metallic
metallic
atose
Mohs atose
ora Sumadhiya
6.00
6
Brinell atose
ora Sumadhiya
735.00 MPa
14
Vickers atose
ora Sumadhiya
870.00 MPa
12
Kacepetan swara
ora Sumadhiya
3,480.00 m / s
21
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
Ra
Nb
isotop
Isotop dikenal
33
6
17
22
keelektronegatifan
Pauling Elektronegativitas
0.90
99+
1.60
23
Sanderson Elektronegativitas
ora Sumadhiya
1.42
16
Allred Rochow Elektronegativitas
0.97
38
1.23
25
Mulliken-Jaffe Elektronegativitas
0.92
20
ora Sumadhiya
Allen Elektronegativitas
0.89
99+
1.41
31
Electropositivity
Pauling Electropositivity
3.10
5
2.40
31
tenogo ionisasi
Level Energy 1st
509.30 kJ / mol
99+
652.10 kJ / mol
99+
Level Energy 2
979.00 kJ / mol
99+
1,380.00 kJ / mol
99+
Level Energy 3rd
ora Sumadhiya
2,416.00 kJ / mol
99+
Level Energy 4
ora Sumadhiya
3,700.00 kJ / mol
99+
Level Energy 5th
ora Sumadhiya
4,877.00 kJ / mol
36
Level Energy 6th
ora Sumadhiya
9,847.00 kJ / mol
11
tingkat Energy 7
ora Sumadhiya
12,100.00 kJ / mol
14
padha karo elektrokimia
4.22 g / amp-day
6
0.69 g / amp-day
99+
Fungsi Work elektron
ora Sumadhiya
4.30 eV
18
Properties Kimia liyane
ionisasi, Isotop radioaktif, Radioaktif
anti Corrosion, ionisasi, Isotop radioaktif, kelarutan
atom Properties
Panggil atom
88
30
41
99+
Konfigurasi elektron
[Rn] 7s 2
[Kr] 4d 4 5S 1
Struktur Crystal
Body tengah kubik (Bcc)
Body tengah kubik (Bcc)
Crystal pola
BCC-Crystal-Structure-.jpg#100
BCC-Crystal-Structure-.jpg#100
atom
Jumlah proton
88
30
41
99+
Jumlah Neutron
138
16
52
99+
Jumlah Èlèktron
88
30
41
99+
Radius saka Atom
Radius atom
ora Sumadhiya
146.00 pm
35
kovalen Radius
221.00 pm
3
164.00 pm
28
Van der Waals Radius
283.00 pm
4
200.00 pm
28
Bobot atom
226.00 Amu
26
92.91 Amu
99+
Volume atom
45.20 cm3 / mol
4
10.87 cm3 / mol
99+
Nomer atom jejer
Potensi Valence Electron
20.10 (-eV)
99+
104.00 (-eV)
8
Constant pola
514.80 pm
13
330.04 pm
99+
pola Angles
π/2, π/2, π/2
π/2, π/2, π/2
Pola C / A rasio
ora Sumadhiya
ora Sumadhiya
Teknik Properties
Kapadhetan
Kapadhetan Ing suhu kamar
5.50 g / cm 3
99+
8.57 g / cm 3
99+
Strength tensile
ora Sumadhiya
330.00 MPa
12
viskositas
ora Sumadhiya
ora Sumadhiya
meksa beluk
Meksa beluk ing 2000 K
ora Sumadhiya
0.00 (Pa)
27
situs kelenturan
nyukur pengaturan
ora Sumadhiya
38.00 GPA
19
pengaturan akeh
ora Sumadhiya
170.00 GPA
10
Young kang pengaturan
ora Sumadhiya
105.00 GPA
20
Poisson rasio
ora Sumadhiya
0.40
4
Properties Teknik liyane
NA
ductile, malleable
Magnetic Properties
Ciri Magnetic
Gravitasi tartamtu
5.00
99+
8.57
37
Nindakake Magnetic
nonmagnetic
paramagnetic
Properties Listrik
Property Listrik
NA
Arman
resistivity
100.00 nΩ · m
31
152.00 nΩ · m
23
konduktivitas listrik
ora Sumadhiya
0.07 10 6 / cm Ω
28
elektron Affinity
ora Sumadhiya
86.10 kJ / mol
12
termal Properties
Kalor tartamtu
0.12 J / (kg K)
40
0.26 J / (kg K)
20
Graham Kapasitas kalor
ora Sumadhiya
24.60 J / mol · K
99+
doyo termal
18.60 W / m · K
99+
53.70 W / m · K
29
suhu kritis
ora Sumadhiya
ora Sumadhiya
Expansion termal
ora Sumadhiya
7.30 μm / (m · K)
99+
enthalpy
Enthalpy panguapan
ora Sumadhiya
696.60 kJ / mol
4
Enthalpy saka Fusion
ora Sumadhiya
27.20 kJ / mol
6
Enthalpy saka atomization
163.00 kJ / mol
99+
745.00 kJ / mol
4
Standard molar Entropy
71.00 J / mol.K
14
36.40 J / mol.K
99+
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