Радий

Радий (Ra)

chemical element with the atomic number of 88
Atomic Number88
Atomic Weight226
mass number201
Group2
Period7
Blocks
Протон88 p+
Нейтрон113 n0
Электрон88 e-
Animated Bohr model of Ra (Радий)

Physical Property

Атомдук Радиус
215 pm
molar volume
covalent radius
201 pm
Metallic Radius
ionic radius
148 pm
Crystal Radius
162 pm
Van der Waals radius
283 pm
density
Atomic Radii Of The Elements: Радий0102030405060708090100110120130140150160170180190200210220230240250260270280290pmАтомдук РадиусCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

энергия
proton affinity
electron affinity
ionization energy
5,278424 eV/particle
ionization energy of Ra (Радий)
enthalpy of vaporization
113 kJ/mol
enthalpy of fusion
9,6 kJ/mol
standard enthalpy of formation
159 kJ/mol
Электрон
electron shell2, 8, 18, 32, 18, 8, 2
Bohr model: Ra (Радий)
valence electron2
Lewis structure: Ra (Радий)
electron configuration[Rn] 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2
Enhanced Bohr model of Ra (Радий)
Orbital Diagram of Ra (Радий)
oxidation number2
electronegativity
0.9
Electrophilicity Index
0,6982685447294388 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
969,15 K
critical pressure
critical temperature
triple point
appearance
Түс –
Silver
appearancesilvery white metallic
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
1 MS/m
electrical resistivity
0,000001 m Ω
superconductivity
Магнетизм
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
түзүм
Crystal StructureBody Centered Cubic ()
lattice constant
Lattice Anglesπ/2, π/2, π/2
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound
classification
CategoryAlkaline earth metals, Alkaline earth metals
CAS GroupIIA
IUPAC GroupIIA
Glawe Number13
Mendeleev Number10
Pettifor Number13
Geochemical ClassU/Th decay series
Литофиль элементтериlitophile

other

Gas Basicity
polarizability
246 ± 4 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
13
Neutron Mass Absorption
Кванттык сандар1S0
space group229 (Im_3m)

Isotopes of Radium

Stable Isotopes0
Unstable Isotopes35
Natural Isotopes0

201Ra

mass number201
neutron number113
relative atomic mass
201,012814699 ± 0,000021794 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
20 ± 30 ms
Спин3/2
nuclear quadrupole moment
time of discovery or invention2005
parity-

decay modeintensity
α (α emission)100%

202Ra

mass number202
neutron number114
relative atomic mass
202,009742305 ± 0,000016122 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
4,1 ± 1,1 ms
Спин0
nuclear quadrupole moment
0
time of discovery or invention2005
parity+

decay modeintensity
α (α emission)100%

203Ra

mass number203
neutron number115
relative atomic mass
203,009233907 ± 0,0000104 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
36 ± 13 ms
Спин3/2
nuclear quadrupole moment
time of discovery or invention1996
parity-

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

204Ra

mass number204
neutron number116
relative atomic mass
204,006506855 ± 0,00000958 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
60 ± 9 ms
Спин0
nuclear quadrupole moment
0
time of discovery or invention1995
parity+

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

205Ra

mass number205
neutron number117
relative atomic mass
205,006230692 ± 0,000024446 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
220 ± 50 ms
Спин3/2
nuclear quadrupole moment
time of discovery or invention1987
parity-

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

206Ra

mass number206
neutron number118
relative atomic mass
206,003827842 ± 0,000019332 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
240 ± 20 ms
Спин0
nuclear quadrupole moment
0
time of discovery or invention1967
parity+

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

207Ra

mass number207
neutron number119
relative atomic mass
207,00377242 ± 0,000062572 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
1,38 ± 0,18 s
Спин5/2
nuclear quadrupole moment
time of discovery or invention1967
parity-

decay modeintensity
α (α emission)86%
β+ (β+ decay; β+ = ϵ + e+)

208Ra

mass number208
neutron number120
relative atomic mass
208,001855012 ± 0,000009686 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
1,11 ± 0,045 s
Спин0
nuclear quadrupole moment
0
time of discovery or invention1967
parity+

decay modeintensity
α (α emission)87%
β+ (β+ decay; β+ = ϵ + e+)

209Ra

mass number209
neutron number121
relative atomic mass
209,001994902 ± 0,000006169 Da
g-factor
0,3444 ± 0,0052
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
4,71 ± 0,08 s
Спин5/2
nuclear quadrupole moment
0,39 ± 0,04
time of discovery or invention1967
parity-

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

210Ra

mass number210
neutron number122
relative atomic mass
210,000475406 ± 0,000009868 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
4 ± 0,1 s
Спин0
nuclear quadrupole moment
0
time of discovery or invention1967
parity+

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

211Ra

mass number211
neutron number123
relative atomic mass
211,000893049 ± 0,000005331 Da
g-factor
0,3496 ± 0,0016
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
12,6 ± 1,2 s
Спин5/2
nuclear quadrupole moment
0,46 ± 0,04
time of discovery or invention1967
parity-

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)

212Ra

mass number212
neutron number124
relative atomic mass
211,999786619 ± 0,000011007 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
13 ± 0,2 s
Спин0
nuclear quadrupole moment
0
time of discovery or invention1967
parity+

decay modeintensity
α (α emission)
β+ (β+ decay; β+ = ϵ + e+)

213Ra

mass number213
neutron number125
relative atomic mass
213,000370971 ± 0,00001054 Da
g-factor
1,22 ± 0,004
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
2,73 ± 0,05 m
Спин1/2
nuclear quadrupole moment
0
time of discovery or invention1955
parity-

decay modeintensity
α (α emission)87%
β+ (β+ decay; β+ = ϵ + e+)13%

214Ra

mass number214
neutron number126
relative atomic mass
214,00009956 ± 0,000005636 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
2,437 ± 0,016 s
Спин0
nuclear quadrupole moment
0
time of discovery or invention1967
parity+

decay modeintensity
α (α emission)99.941%
β+ (β+ decay; β+ = ϵ + e+)0.059%

215Ra

mass number215
neutron number127
relative atomic mass
215,002718208 ± 0,00000773 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
1,669 ± 0,009 ms
Спин9/2
nuclear quadrupole moment
time of discovery or invention1967
parity+

decay modeintensity
α (α emission)100%

216Ra

mass number216
neutron number128
relative atomic mass
216,003533534 ± 0,000008592 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
172 ± 7 ns
Спин0
nuclear quadrupole moment
0
time of discovery or invention1972
parity+

decay modeintensity
α (α emission)100%
ϵ (electron capture)1%

217Ra

mass number217
neutron number129
relative atomic mass
217,006322676 ± 0,000007564 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
1,95 ± 0,12 us
Спин9/2
nuclear quadrupole moment
time of discovery or invention1970
parity+

decay modeintensity
α (α emission)100%

218Ra

mass number218
neutron number130
relative atomic mass
218,007134297 ± 0,000010528 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
25,91 ± 0,14 us
Спин0
nuclear quadrupole moment
0
time of discovery or invention1970
parity+

decay modeintensity
α (α emission)100%

219Ra

mass number219
neutron number131
relative atomic mass
219,010084715 ± 0,000007315 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
9 ± 2 ms
Спин7/2
nuclear quadrupole moment
time of discovery or invention1952
parity

decay modeintensity
α (α emission)100%

220Ra

mass number220
neutron number132
relative atomic mass
220,011027542 ± 0,000008153 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
18,1 ± 1,2 ms
Спин0
nuclear quadrupole moment
0
time of discovery or invention1949
parity+

decay modeintensity
α (α emission)100%

221Ra

mass number221
neutron number133
relative atomic mass
221,013917293 ± 0,00000497 Da
g-factor
-0,0716 ± 0,00068
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
25 ± 4 s
Спин5/2
nuclear quadrupole moment
1,92 ± 0,06
time of discovery or invention1949
parity+

decay modeintensity
α (α emission)100%
14C1.2%

222Ra

mass number222
neutron number134
relative atomic mass
222,015373371 ± 0,000004781 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
33,6 ± 0,4 s
Спин0
nuclear quadrupole moment
0
time of discovery or invention1948
parity+

decay modeintensity
α (α emission)100%
14C3%

223Ra

mass number223
neutron number135
relative atomic mass
223,018500648 ± 0,000002243 Da
g-factor
0,17946666666667 ± 0,00053333333333333
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
11,4352 ± 0,001 d
Спин3/2
nuclear quadrupole moment
1,22 ± 0,03
time of discovery or invention1905
parity+

decay modeintensity
α (α emission)100%
14C8.9%

224Ra

mass number224
neutron number136
relative atomic mass
224,020210361 ± 0,000001944 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
3,6316 ± 0,0014 d
Спин0
nuclear quadrupole moment
0
time of discovery or invention1902
parity+

decay modeintensity
α (α emission)100%
14C4%

225Ra

mass number225
neutron number137
relative atomic mass
225,023610502 ± 0,000002786 Da
g-factor
-1,46 ± 0,004
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
14,82 ± 0,19 d
Спин1/2
nuclear quadrupole moment
0
time of discovery or invention1947
parity+

decay modeintensity
β (β decay)100%

226Ra

mass number226
neutron number138
relative atomic mass
226,025408186 ± 0,000002068 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
1,6 ± 0,007 ky
Спин0
nuclear quadrupole moment
0
time of discovery or invention1898
parity+

decay modeintensity
α (α emission)100%
14C2.6%
(double β decay)

227Ra

mass number227
neutron number139
relative atomic mass
227,029176205 ± 0,000002089 Da
g-factor
-0,26733333333333 ± 0,00073333333333333
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
42,2 ± 0,5 m
Спин3/2
nuclear quadrupole moment
1,53 ± 0,06
time of discovery or invention1953
parity+

decay modeintensity
β (β decay)100%

228Ra

mass number228
neutron number140
relative atomic mass
228,031068574 ± 0,000002141 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
5,75 ± 0,03 y
Спин0
nuclear quadrupole moment
0
time of discovery or invention1907
parity+

decay modeintensity
β (β decay)100%

229Ra

mass number229
neutron number141
relative atomic mass
229,034956703 ± 0,000016576 Da
g-factor
0,19968 ± 0,00056
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
4 ± 0,2 m
Спин5/2
nuclear quadrupole moment
2,99 ± 0,12
time of discovery or invention1975
parity+

decay modeintensity
β (β decay)100%

230Ra

mass number230
neutron number142
relative atomic mass
230,037054776 ± 0,000011053 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
93 ± 2 m
Спин0
nuclear quadrupole moment
0
time of discovery or invention1978
parity+

decay modeintensity
β (β decay)100%

231Ra

mass number231
neutron number143
relative atomic mass
231,041027085 ± 0,000012206 Da
g-factor
-0,14216 ± 0,00044
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
104 ± 1 s
Спин5/2
nuclear quadrupole moment
time of discovery or invention1983
parity+

decay modeintensity
β (β decay)100%

232Ra

mass number232
neutron number144
relative atomic mass
232,043475267 ± 0,000009823 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
4 ± 0,3 m
Спин0
nuclear quadrupole moment
0
time of discovery or invention1983
parity+

decay modeintensity
β (β decay)100%

233Ra

mass number233
neutron number145
relative atomic mass
233,04759457 ± 0,000009235 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
30 ± 5 s
Спин1/2
nuclear quadrupole moment
0
time of discovery or invention1990
parity+

decay modeintensity
β (β decay)100%

234Ra

mass number234
neutron number146
relative atomic mass
234,0503821 ± 0,000009 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
30 ± 10 s
Спин0
nuclear quadrupole moment
0
time of discovery or invention1990
parity+

decay modeintensity
β (β decay)100%
β SF (β-delayed fission)

235Ra

mass number235
neutron number147
relative atomic mass
235,05489 ± 0,000322 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
Спин5/2
nuclear quadrupole moment
time of discovery or invention
parity+

decay modeintensity
β (β decay)
Radium226

тарых

discoverer or inventorPierre and Marie Curie
location of discoveryFrance
time of discovery or invention1898
ЭтимологияLatin: radius (ray).
pronunciationRAY-di-em (англисче)

source

Abundance
Abundance in Earth's crust
0,0000009 mg/kg
natural abundance (Океан)
0,000000000089 mg/L
natural abundance (human body)
0,0000000000001 %
natural abundance (meteoroid)
natural abundance (Күн)
Abundance in Universe
0 %

Nuclear Screening Constants