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Radium unsur
Radium


Tabel périodik
Symbol
Ra
Panggil Group
2 16
Panggil periode
7 1
Block
s pemblokiran
Family unsur
alkalin bumi
CAS Number
7440144 65
Jeneng papan Group
3M Im_
Space Group Number
229.00 2
facts
Facts Interesting
  • metal Radium punika logam abot saka Alkaline logam bumi asli.
  • Radium logam punika Highly radioaktif lan ora duwe tengen mangiwa.
sumber
Mining, Ores logam
History
sing katutup
-
Discovery
ing taun 1898
turah mbrawah
Turah mbrawah Ing Universe
0.00 % 40
Turah mbrawah Ing Sun
0.00 % 26
Turah mbrawah Ing meteorit
-
Turah mbrawah Ing bumi lemah ndhuwur
0.00 % 57
Turah mbrawah Ing Segara
0.00 % 45
Turah mbrawah Ing Manungsa
0.00 % 23
ulah
Ulah lan Wuku
  • Punika logam Highly radioaktif; lan arang-arang Radium-223 digunakake kanggo nambani kanker prostat.
  • Kang digunakake ing cat cetha.
Ulah Industrial
-
Ulah Medical
Industry Pharmaceutical
Ulah liyane
-
Properties biologi
keracunan
Highly Toxic
Saiki ing badan Human
Ora
Sang
0.00 Sang / mg dm-3 34
ing Bone
0.00 ppm 41
fisik
leleh Point
700.00 ° C 59
Boiling Point
1,737.00 ° C 56
katon
State fisik
Solid
warna
perak Putih
luster
metallic
atose
Mohs atose
1.00 22
Brinell atose
700.00 MPa 17
Vickers atose
140.00 MPa 59
Kacepetan swara
3,150.00 m / s 37
Properties Optical
bias Index
1.00 48
reflectivity
83.00 % 6
allotropes
Ora
α allotropes
-
β allotropes
-
γ allotropes
-
Kimia
Formula Kimia
Ra
isotop
Isotop dikenal
33 6
keelektronegatifan
Pauling Elektronegativitas
0.90 50
Sanderson Elektronegativitas
0.89 45
Allred Rochow Elektronegativitas
0.97 39
Mulliken-Jaffe Elektronegativitas
0.92 48
Allen Elektronegativitas
0.89 60
Electropositivity
Pauling Electropositivity
3.10 5
tenogo ionisasi
Level Energy 1st
509.30 kJ / mol 82
Level Energy 2
979.00 kJ / mol 82
Level Energy 3rd
509.30 kJ / mol 90
Level Energy 4
5,093.00 kJ / mol 27
Level Energy 5th
5,090.00 kJ / mol 73
Level Energy 6th
5,090.00 kJ / mol 85
tingkat Energy 7
5,090.00 kJ / mol 77
Level Energy 8
5,090.00 kJ / mol 75
Level Energy 9
5,090.00 kJ / mol 76
Level Energy 10th
5,090.00 kJ / mol 73
Level Energy 11
5,090.00 kJ / mol 78
Level Energy 12
5,090.00 kJ / mol 81
Level Energy 13
5,090.00 kJ / mol 71
Level Energy 14
5,090.00 kJ / mol 55
Level Energy 15
50,900.00 kJ / mol 71
Level Energy 16
50,900.00 kJ / mol 57
Level Energy 17
509.30 kJ / mol 86
Level Energy 18
5,090.00 kJ / mol 71
Level Energy 19
509.30 kJ / mol 85
Level Energy 20
509.00 kJ / mol 75
Level Energy 21
509.30 kJ / mol 85
Level Energy 22
509.00 kJ / mol 69
Level Energy 23rd
509.30 kJ / mol 81
Level Energy 24
509.30 kJ / mol 81
Level Energy 25th
509.00 kJ / mol 73
Level Energy 26th
509.30 kJ / mol 81
Level Energy 27th
509.30 kJ / mol 76
Level Energy 28th
509.30 kJ / mol 79
Level Energy 29
509.30 kJ / mol 82
Level Energy 30
509.00 kJ / mol 76
padha karo elektrokimia
4.22 g / amp-day 6
Fungsi Work elektron
4.30 eV 25
Properties Kimia liyane
ionisasi, Isotop radioaktif, Radioaktif
atom
Panggil atom
88 30
Konfigurasi elektron
[Rn] 7s 2
Struktur Crystal
Body tengah kubik (Bcc)
Crystal pola
BCC-Crystal-Structure-.jpg#100
atom
Jumlah proton
88 30
Jumlah Neutron
138 17
Jumlah Èlèktron
88 30
Radius saka Atom
Radius atom
215.00 pm 6
kovalen Radius
221.00 pm 3
Van der Waals Radius
283.00 pm 5
Bobot atom
226.00 Amu 26
Volume atom
45.20 cm3 / mol 5
Nomer atom jejer
unsur Previous
47
Sabanjure unsur
53
Potensi Valence Electron
20.10 (-eV) 62
Constant pola
514.80 pm 15
pola Angles
π/2, π/2, π/2
Pola C / A rasio
1.57 41
Teknik
Kapadhetan
Kapadhetan Ing suhu kamar
5.50 g / cm 3 73
Kapadhetan Nalika Liquid (ing mp)
5.50 g / cm3 75
Strength tensile
40.00 MPa 42
viskositas
0.00 2
meksa beluk
Meksa beluk ing 1000 K
0.00 (Pa) 16
Meksa beluk ing 2000 K
0.00 (Pa) 33
situs kelenturan
nyukur pengaturan
25.00 GPA 38
pengaturan akeh
43.00 GPA 33
Young kang pengaturan
83.00 GPA 25
Poisson rasio
0.31 13
Properties Teknik liyane
-
Magnetic
Ciri Magnetic
Gravitasi tartamtu
5.00 72
Nindakake Magnetic
nonmagnetic
permeabilitas
0.00 H / m 9
kelemahan
0.00 18
Properties Listrik
Property Listrik
-
resistivity
100.00 nΩ · m 31
konduktivitas listrik
0.00 10 6 / cm Ω 70
elektron Affinity
0.90 kJ / mol 46
termal
Kalor tartamtu
0.12 J / (kg K) 42
Graham Kapasitas kalor
20.05 J / mol · K 67
doyo termal
18.60 W / m · K 46
suhu kritis
973.00 K 61
Expansion termal
8.50 μm / (m · K) 60
enthalpy
Enthalpy panguapan
113.00 kJ / mol 77
Enthalpy saka Fusion
8.60 kJ / mol 47
Enthalpy saka atomization
163.00 kJ / mol 63
Standard molar Entropy
71.00 J / mol.K 14
Summary >>
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