Радий

Радий (Ra)

chemical element with the atomic number of 88
Atomic Number88
Atomic Weight226
Адади массавӣ201
Group2
Period7
Blocks
proton88 p+
neutron113 n0
electron88 e-
Animated Bohr model of Ra (Радий)

Хусусияти Физикӣ

Atomic Radius
215 pm
molar volume
covalent radius
201 pm
Metallic Radius
ionic radius
148 pm
Crystal Radius
162 pm
Van der Waals radius
283 pm
зичӣ
Atomic Radii Of The Elements: Радий0102030405060708090100110120130140150160170180190200210220230240250260270280290pmAtomic RadiusCovalent 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
гармои гудозиш
9,6 kJ/mol
standard enthalpy of formation
159 kJ/mol
electron
Абри электронӣ2, 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
Ранг
Silver
appearancesilvery white metallic
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
навъConductor
electrical conductivity
1 MS/m
electrical resistivity
0,000001 m Ω
superconductivity
magnetism
навъ
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
сохт
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
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
246 ± 4 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
13
Neutron Mass Absorption
ададҳои квантӣ1S0
space group229 (Im_3m)

Isotopes of Radium

Stable Isotopes0
Unstable Isotopes35
Natural Isotopes0

201Ra

Адади массавӣ201
neutron number113
relative atomic mass
201,012814699 ± 0,000021794 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
20 ± 30 ms
spin3/2
nuclear quadrupole moment
таърихи кашф2005
parity-

decay modeintensity
α (α emission)100%

202Ra

Адади массавӣ202
neutron number114
relative atomic mass
202,009742305 ± 0,000016122 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
4,1 ± 1,1 ms
spin0
nuclear quadrupole moment
0
таърихи кашф2005
parity+

decay modeintensity
α (α emission)100%

203Ra

Адади массавӣ203
neutron number115
relative atomic mass
203,009233907 ± 0,0000104 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
36 ± 13 ms
spin3/2
nuclear quadrupole moment
таърихи кашф1996
parity-

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

204Ra

Адади массавӣ204
neutron number116
relative atomic mass
204,006506855 ± 0,00000958 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
60 ± 9 ms
spin0
nuclear quadrupole moment
0
таърихи кашф1995
parity+

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

205Ra

Адади массавӣ205
neutron number117
relative atomic mass
205,006230692 ± 0,000024446 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
220 ± 50 ms
spin3/2
nuclear quadrupole moment
таърихи кашф1987
parity-

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

206Ra

Адади массавӣ206
neutron number118
relative atomic mass
206,003827842 ± 0,000019332 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
240 ± 20 ms
spin0
nuclear quadrupole moment
0
таърихи кашф1967
parity+

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

207Ra

Адади массавӣ207
neutron number119
relative atomic mass
207,00377242 ± 0,000062572 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,38 ± 0,18 s
spin5/2
nuclear quadrupole moment
таърихи кашф1967
parity-

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

208Ra

Адади массавӣ208
neutron number120
relative atomic mass
208,001855012 ± 0,000009686 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
1,11 ± 0,045 s
spin0
nuclear quadrupole moment
0
таърихи кашф1967
parity+

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

209Ra

Адади массавӣ209
neutron number121
relative atomic mass
209,001994902 ± 0,000006169 Da
g-factor
0,3444 ± 0,0052
natural abundance
radioactivity☢️ radioactive element
half-life
4,71 ± 0,08 s
spin5/2
nuclear quadrupole moment
0,39 ± 0,04
таърихи кашф1967
parity-

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

210Ra

Адади массавӣ210
neutron number122
relative atomic mass
210,000475406 ± 0,000009868 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
4 ± 0,1 s
spin0
nuclear quadrupole moment
0
таърихи кашф1967
parity+

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

211Ra

Адади массавӣ211
neutron number123
relative atomic mass
211,000893049 ± 0,000005331 Da
g-factor
0,3496 ± 0,0016
natural abundance
radioactivity☢️ radioactive element
half-life
12,6 ± 1,2 s
spin5/2
nuclear quadrupole moment
0,46 ± 0,04
таърихи кашф1967
parity-

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

212Ra

Адади массавӣ212
neutron number124
relative atomic mass
211,999786619 ± 0,000011007 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
13 ± 0,2 s
spin0
nuclear quadrupole moment
0
таърихи кашф1967
parity+

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

213Ra

Адади массавӣ213
neutron number125
relative atomic mass
213,000370971 ± 0,00001054 Da
g-factor
1,22 ± 0,004
natural abundance
radioactivity☢️ radioactive element
half-life
2,73 ± 0,05 m
spin1/2
nuclear quadrupole moment
0
таърихи кашф1955
parity-

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

214Ra

Адади массавӣ214
neutron number126
relative atomic mass
214,00009956 ± 0,000005636 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
2,437 ± 0,016 s
spin0
nuclear quadrupole moment
0
таърихи кашф1967
parity+

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

215Ra

Адади массавӣ215
neutron number127
relative atomic mass
215,002718208 ± 0,00000773 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,669 ± 0,009 ms
spin9/2
nuclear quadrupole moment
таърихи кашф1967
parity+

decay modeintensity
α (α emission)100%

216Ra

Адади массавӣ216
neutron number128
relative atomic mass
216,003533534 ± 0,000008592 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
172 ± 7 ns
spin0
nuclear quadrupole moment
0
таърихи кашф1972
parity+

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

217Ra

Адади массавӣ217
neutron number129
relative atomic mass
217,006322676 ± 0,000007564 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,95 ± 0,12 us
spin9/2
nuclear quadrupole moment
таърихи кашф1970
parity+

decay modeintensity
α (α emission)100%

218Ra

Адади массавӣ218
neutron number130
relative atomic mass
218,007134297 ± 0,000010528 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
25,91 ± 0,14 us
spin0
nuclear quadrupole moment
0
таърихи кашф1970
parity+

decay modeintensity
α (α emission)100%

219Ra

Адади массавӣ219
neutron number131
relative atomic mass
219,010084715 ± 0,000007315 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
9 ± 2 ms
spin7/2
nuclear quadrupole moment
таърихи кашф1952
parity

decay modeintensity
α (α emission)100%

220Ra

Адади массавӣ220
neutron number132
relative atomic mass
220,011027542 ± 0,000008153 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
18,1 ± 1,2 ms
spin0
nuclear quadrupole moment
0
таърихи кашф1949
parity+

decay modeintensity
α (α emission)100%

221Ra

Адади массавӣ221
neutron number133
relative atomic mass
221,013917293 ± 0,00000497 Da
g-factor
-0,0716 ± 0,00068
natural abundance
radioactivity☢️ radioactive element
half-life
25 ± 4 s
spin5/2
nuclear quadrupole moment
1,92 ± 0,06
таърихи кашф1949
parity+

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

222Ra

Адади массавӣ222
neutron number134
relative atomic mass
222,015373371 ± 0,000004781 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
33,6 ± 0,4 s
spin0
nuclear quadrupole moment
0
таърихи кашф1948
parity+

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

223Ra

Адади массавӣ223
neutron number135
relative atomic mass
223,018500648 ± 0,000002243 Da
g-factor
0,17946666666667 ± 0,00053333333333333
natural abundance
radioactivity☢️ radioactive element
half-life
11,4352 ± 0,001 d
spin3/2
nuclear quadrupole moment
1,22 ± 0,03
таърихи кашф1905
parity+

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

224Ra

Адади массавӣ224
neutron number136
relative atomic mass
224,020210361 ± 0,000001944 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
3,6316 ± 0,0014 d
spin0
nuclear quadrupole moment
0
таърихи кашф1902
parity+

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

225Ra

Адади массавӣ225
neutron number137
relative atomic mass
225,023610502 ± 0,000002786 Da
g-factor
-1,46 ± 0,004
natural abundance
radioactivity☢️ radioactive element
half-life
14,82 ± 0,19 d
spin1/2
nuclear quadrupole moment
0
таърихи кашф1947
parity+

decay modeintensity
β (β decay)100%

226Ra

Адади массавӣ226
neutron number138
relative atomic mass
226,025408186 ± 0,000002068 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
1,6 ± 0,007 ky
spin0
nuclear quadrupole moment
0
таърихи кашф1898
parity+

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

227Ra

Адади массавӣ227
neutron number139
relative atomic mass
227,029176205 ± 0,000002089 Da
g-factor
-0,26733333333333 ± 0,00073333333333333
natural abundance
radioactivity☢️ radioactive element
half-life
42,2 ± 0,5 m
spin3/2
nuclear quadrupole moment
1,53 ± 0,06
таърихи кашф1953
parity+

decay modeintensity
β (β decay)100%

228Ra

Адади массавӣ228
neutron number140
relative atomic mass
228,031068574 ± 0,000002141 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
5,75 ± 0,03 y
spin0
nuclear quadrupole moment
0
таърихи кашф1907
parity+

decay modeintensity
β (β decay)100%

229Ra

Адади массавӣ229
neutron number141
relative atomic mass
229,034956703 ± 0,000016576 Da
g-factor
0,19968 ± 0,00056
natural abundance
radioactivity☢️ radioactive element
half-life
4 ± 0,2 m
spin5/2
nuclear quadrupole moment
2,99 ± 0,12
таърихи кашф1975
parity+

decay modeintensity
β (β decay)100%

230Ra

Адади массавӣ230
neutron number142
relative atomic mass
230,037054776 ± 0,000011053 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
93 ± 2 m
spin0
nuclear quadrupole moment
0
таърихи кашф1978
parity+

decay modeintensity
β (β decay)100%

231Ra

Адади массавӣ231
neutron number143
relative atomic mass
231,041027085 ± 0,000012206 Da
g-factor
-0,14216 ± 0,00044
natural abundance
radioactivity☢️ radioactive element
half-life
104 ± 1 s
spin5/2
nuclear quadrupole moment
таърихи кашф1983
parity+

decay modeintensity
β (β decay)100%

232Ra

Адади массавӣ232
neutron number144
relative atomic mass
232,043475267 ± 0,000009823 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
4 ± 0,3 m
spin0
nuclear quadrupole moment
0
таърихи кашф1983
parity+

decay modeintensity
β (β decay)100%

233Ra

Адади массавӣ233
neutron number145
relative atomic mass
233,04759457 ± 0,000009235 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
30 ± 5 s
spin1/2
nuclear quadrupole moment
0
таърихи кашф1990
parity+

decay modeintensity
β (β decay)100%

234Ra

Адади массавӣ234
neutron number146
relative atomic mass
234,0503821 ± 0,000009 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
30 ± 10 s
spin0
nuclear quadrupole moment
0
таърихи кашф1990
parity+

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

235Ra

Адади массавӣ235
neutron number147
relative atomic mass
235,05489 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin5/2
nuclear quadrupole moment
таърихи кашф
parity+

decay modeintensity
β (β decay)
Radium226

таърих

кошифPierre and Marie Curie
макони кашфFrance
таърихи кашф1898
РешашиносӣLatin: radius (ray).
pronunciationRAY-di-em (Англисӣ)

source

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

Nuclear Screening Constants