Symbol
Ra
Mt
Panggil Group
29
0
17
👆🏻
Panggil periode
77
2
7
👆🏻
Block
s pemblokiran
d block
Family unsur
alkalin bumi
mbokmenawa Transition
CAS Number
744014454038016
7429905
54386242
👆🏻
Jeneng papan Group
3M Im_
-
Space Group Number
229.00166.00
11
276
👆🏻
Facts Interesting
- metal Radium punika logam abot saka Alkaline logam bumi asli.
- Radium logam punika Highly radioaktif lan ora duwe tengen mangiwa.
Meitnerium dijenengi sawise Lise Meitner, fisikawan Austria.
sumber
Mining, Ores logam
Némbakaké Bi209 karo cepet inti Fe58, sintetik Diprodhuksi
History
sing katutup
-
Gesellschaft für Schwerionenforschung
Discovery
ing taun 1898
ing taun 1982
turah mbrawah
Turah mbrawah Ing Universe
0.00 %0.00 %
0
0.11
👆🏻
Turah mbrawah Ing Sun
0.00 %-
0
0.1
👆🏻
Turah mbrawah Ing meteorit
-0.00 %
0
22
👆🏻
Turah mbrawah Ing bumi lemah ndhuwur
0.00 %-
1E-37
8.1
👆🏻
Turah mbrawah Ing Segara
0.00 %-
0
1.1
👆🏻
Turah mbrawah Ing Manungsa
0.00 %-
0
1.4
👆🏻
Ulah lan Wuku
- Punika logam Highly radioaktif; lan arang-arang Radium-223 digunakake kanggo nambani kanker prostat.
- Kang digunakake ing cat cetha.
- Efesus saiki dikenal saka logam Meitnerium sing winates kanggo riset waé mung.
Ulah Industrial
-
-
Ulah Medical
Industry Pharmaceutical
-
Ulah liyane
-
-
Properties biologi
keracunan
Highly Toxic
-
Saiki ing badan Human
Ora
Ora
Sang
0.00 Sang / mg dm-30.00 Sang / mg dm-3
0
1970
👆🏻
ing Bone
0.00 ppm0.00 ppm
0
170000
👆🏻
leleh Point
700.00 ° C-
-38.83
3410
👆🏻
Boiling Point
1,737.00 ° C0.00 ° C
0
5660
👆🏻
katon
State fisik
Solid
Solid
warna
perak Putih
-
luster
metallic
Unknown Luster
atose
Mohs atose
1.00-
0.2
8.5
👆🏻
Brinell atose
700.00 MPa400.00 MPa
0.14
3490
👆🏻
Vickers atose
140.00 MPa350.00 MPa
0
3920
👆🏻
Kacepetan swara
3,150.00 m / s3,200.00 m / s
818
16200
👆🏻
Properties Optical
bias Index
1.001.30
0.155
3.41
👆🏻
reflectivity
83.00 %68.00 %
5
97
👆🏻
allotropes
Ora
Ora
α allotropes
-
-
β allotropes
-
-
γ allotropes
-
-
Formula Kimia
Ra
Mt
isotop
Isotop dikenal
334
0
38
👆🏻
keelektronegatifan
Pauling Elektronegativitas
0.901.30
0
2.6
👆🏻
Sanderson Elektronegativitas
0.891.90
0.22
2.56
👆🏻
Allred Rochow Elektronegativitas
0.971.30
0.86
1.9
👆🏻
Mulliken-Jaffe Elektronegativitas
0.921.30
0.62
2.48
👆🏻
Allen Elektronegativitas
0.891.30
0.659
2.7
👆🏻
Electropositivity
Pauling Electropositivity
3.102.00
1.46
3.3
👆🏻
tenogo ionisasi
Level Energy 1st
509.30 kJ / mol800.80 kJ / mol
375.7
26130
👆🏻
Level Energy 2
979.00 kJ / mol1,823.60 kJ / mol
392.8
28750
👆🏻
Level Energy 3rd
509.30 kJ / mol2,904.20 kJ / mol
392.8
34230
👆🏻
Level Energy 4
5,093.00 kJ / mol3,859.40 kJ / mol
375.7
37066
👆🏻
Level Energy 5th
5,090.00 kJ / mol4,920.80 kJ / mol
392
97510
👆🏻
Level Energy 6th
5,090.00 kJ / mol8,000.00 kJ / mol
1007
105800
👆🏻
tingkat Energy 7
5,090.00 kJ / mol8,000.00 kJ / mol
1007
114300
👆🏻
Level Energy 8
5,090.00 kJ / mol8,000.00 kJ / mol
730
125300
👆🏻
Level Energy 9
5,090.00 kJ / mol6,700.00 kJ / mol
1007
134700
👆🏻
Level Energy 10th
5,090.00 kJ / mol5,800.00 kJ / mol
392
144300
👆🏻
Level Energy 11
5,090.00 kJ / mol6,300.00 kJ / mol
392
169988
👆🏻
Level Energy 12
5,090.00 kJ / mol0.00 kJ / mol
0
189368
👆🏻
Level Energy 13
5,090.00 kJ / mol8,000.00 kJ / mol
1007
76015
👆🏻
Level Energy 14
5,090.00 kJ / mol1,156.00 kJ / mol
380
86450
👆🏻
Level Energy 15
50,900.00 kJ / mol80,000.00 kJ / mol
33000
100700
👆🏻
Level Energy 16
50,900.00 kJ / mol58,700.00 kJ / mol
375.7
109480
👆🏻
Level Energy 17
509.30 kJ / mol1,110.00 kJ / mol
375.7
122200
👆🏻
Level Energy 18
5,090.00 kJ / mol8,000.00 kJ / mol
0
134810
👆🏻
Level Energy 19
509.30 kJ / mol1,110.00 kJ / mol
375.7
148700
👆🏻
Level Energy 20
509.00 kJ / mol850.00 kJ / mol
0
171200
👆🏻
Level Energy 21
509.30 kJ / mol800.00 kJ / mol
375.7
179100
👆🏻
Level Energy 22
509.00 kJ / mol380.00 kJ / mol
330
184900
👆🏻
Level Energy 23rd
509.30 kJ / mol8,000.00 kJ / mol
357.6
198800
👆🏻
Level Energy 24
509.30 kJ / mol565.60 kJ / mol
297.3
195200
👆🏻
Level Energy 25th
509.00 kJ / mol800.00 kJ / mol
0
121900
👆🏻
Level Energy 26th
509.30 kJ / mol800.00 kJ / mol
357.6
127700
👆🏻
Level Energy 27th
509.30 kJ / mol800.00 kJ / mol
0
133800
👆🏻
Level Energy 28th
509.30 kJ / mol800.00 kJ / mol
297.3
139800
👆🏻
Level Energy 29
509.30 kJ / mol800.00 kJ / mol
0
148100
👆🏻
Level Energy 30
509.00 kJ / mol800.00 kJ / mol
0
154500
👆🏻
padha karo elektrokimia
4.22 g / amp-day3.00 g / amp-day
0.16812
8.3209
👆🏻
Fungsi Work elektron
4.30 eV4.90 eV
2.14
6
👆🏻
Properties Kimia liyane
ionisasi, Isotop radioaktif, Radioaktif
ionisasi, Isotop radioaktif, Radioaktif
Panggil atom
88109
3
117
👆🏻
Konfigurasi elektron
[Rn] 7s 2
[Rn] 5F 14 6D 7 7s 2
Struktur Crystal
Body tengah kubik (Bcc)
Face tengah kubik (FCC)
Crystal pola
atom
Jumlah proton
88109
3
117
👆🏻
Jumlah Neutron
138157
4
285
👆🏻
Jumlah Èlèktron
88109
3
117
👆🏻
Radius saka Atom
Radius atom
215.00 pm122.00 pm
0
348
👆🏻
kovalen Radius
221.00 pm129.00 pm
0
260
👆🏻
Van der Waals Radius
283.00 pm260.00 pm
0
348
👆🏻
Bobot atom
226.00 Amu278.00 Amu
6.94
294
👆🏻
Volume atom
45.20 cm3 / mol20.20 cm3 / mol
1.39
71.07
👆🏻
Nomer atom jejer
unsur Previous
Sabanjure unsur
Potensi Valence Electron
20.10 (-eV)31.20 (-eV)
0
392.42
👆🏻
Constant pola
514.80 pm0.00 pm
0
891.25
👆🏻
pola Angles
π/2, π/2, π/2
-
Pola C / A rasio
1.571.59
0.423
1.9
👆🏻
Kapadhetan
Kapadhetan Ing suhu kamar
5.50 g / cm 337.40 g / cm 3
0.534
40.7
👆🏻
Kapadhetan Nalika Liquid (ing mp)
5.50 g / cm337.40 g / cm3
0.512
41
👆🏻
Strength tensile
40.00 MPa80.00 MPa
0.1
11000
👆🏻
viskositas
0.000.00
1.5E-05
0.0035
👆🏻
meksa beluk
Meksa beluk ing 1000 K
0.00 (Pa)0.00 (Pa)
0
121
👆🏻
Meksa beluk ing 2000 K
0.00 (Pa)0.00 (Pa)
0
774
👆🏻
situs kelenturan
nyukur pengaturan
25.00 GPA35.00 GPA
1.3
222
👆🏻
pengaturan akeh
43.00 GPA0.00 GPA
0
462
👆🏻
Young kang pengaturan
83.00 GPA13.50 GPA
0
528
👆🏻
Poisson rasio
0.310.25
0.032
0.47
👆🏻
Properties Teknik liyane
-
-
Ciri Magnetic
Gravitasi tartamtu
5.0037.40
0.53
4500
👆🏻
Nindakake Magnetic
nonmagnetic
paramagnetic
permeabilitas
0.00 H / m0.00 H / m
1.25643E-06
0.0063
👆🏻
kelemahan
0.000.00
-0.000166
200000
👆🏻
Properties Listrik
Property Listrik
-
-
resistivity
100.00 nΩ · m0.35 nΩ · m
0.1
961
👆🏻
konduktivitas listrik
0.00 10 6 / cm Ω0.00 10 6 / cm Ω
0
0.63
👆🏻
elektron Affinity
0.90 kJ / mol50.00 kJ / mol
0
222.8
👆🏻
Kalor tartamtu
0.12 J / (kg K)0.10 J / (kg K)
0.1
3.6
👆🏻
Graham Kapasitas kalor
20.05 J / mol · K27.00 J / mol · K
13.1
62.7
👆🏻
doyo termal
18.60 W / m · K0.00 W / m · K
0
429
👆🏻
suhu kritis
973.00 K1,323.00 K
26.3
3695
👆🏻
Expansion termal
8.50 μm / (m · K)10.30 μm / (m · K)
4.5
97
👆🏻
enthalpy
Enthalpy panguapan
113.00 kJ / mol110.00 kJ / mol
7.32
799.1
👆🏻
Enthalpy saka Fusion
8.60 kJ / mol-
2.1
35.23
👆🏻
Enthalpy saka atomization
163.00 kJ / mol350.20 kJ / mol
61.5
837
👆🏻
Standard molar Entropy
71.00 J / mol.K63.80 J / mol.K
9.5
198.1
👆🏻