Radioa (Ra)

88 zenbaki atomikoa duen elementu kimikoa

Atomic Number	88
Atomic Weight	226
masa-zenbaki	201

Group	2
Period	7
Block	s

protoi	88 p⁺
neutroi	113 n⁰
elektroi	88 e^-

Animated Bohrren eredu atomikoa of Ra (Radioa)

Propietate Fisiko

Erradio Atomiko	215 pm 292 pm
bolumen molar	45 cm³/mol
Erradio Kobalente	201 pm 173 pm 159 pm 221 pm
Metallic Radius
Erradio ioniko	148 pm 170 pm
Crystal Radius	162 pm 184 pm
Van der Waalsen erradio	283 pm 327 pm 283 pm 367,7 pm
dentsitatea	5 g/cm³

Magnitude Fisiko

{ERROR}

energia

proton affinity
Afinitate elektroniko	0,1 eV/particle
ionizazio energia	5,278424 eV/particle 10,147153 eV/particle 31 eV/particle 41 eV/particle 52,9 eV/particle 64 eV/particle 82 eV/particle 97 eV/particle 100 eV/particle 140 eV/particle 204,9 eV/particle 227 eV/particle 250 eV/particle 274 eV/particle 299 eV/particle 324 eV/particle 356 eV/particle 382 eV/particle 409 eV/particle 435 eV/particle 570 eV/particle 600 eV/particle 630 eV/particle 660 eV/particle 740 eV/particle 770 eV/particle 860 eV/particle 900 eV/particle 970 eV/particle 1.040 eV/particle 1.110 eV/particle 1.180 eV/particle 1.250 eV/particle 1.320 eV/particle 1.390 eV/particle 1.460 eV/particle 1.530 eV/particle 1.610 eV/particle 1.680 eV/particle 1.750 eV/particle 1.820 eV/particle 1.880 eV/particle 2.208 eV/particle 2.271 eV/particle 2.338 eV/particle 2.409 eV/particle 2.477 eV/particle 2.544 eV/particle 2.662 eV/particle 2.731 eV/particle 2.806 eV/particle 2.876 eV/particle 3.155 eV/particle 3.224 eV/particle 3.300 eV/particle 3.368 eV/particle 3.682 eV/particle 3.762 eV/particle 3.959 eV/particle 4.040 eV/particle 6.565 eV/particle 6.718 eV/particle 6.881 eV/particle 7.056 eV/particle 7.222 eV/particle 7.380 eV/particle 7.720 eV/particle 7.890 eV/particle 8.080 eV/particle 8.250 eV/particle 8.730 eV/particle 8.880 eV/particle 9.040 eV/particle 9.200 eV/particle 10.190 eV/particle 10.360 eV/particle 10.720 eV/particle 10.890 eV/particle 22.900 eV/particle 23.300 eV/particle 23.750 eV/particle 24.160 eV/particle 27.830 eV/particle 28.370 eV/particle 29.050 eV/particle 29.479,8 eV/particle 116.848,7 eV/particle 118.931,3 eV/particle

Irakite-entalpia	113 kJ/mol
urtze-entalpia	9,6 kJ/mol
formazio entalpia estandarra	159 kJ/mol
elektroi

elektroi geruza	2, 8, 18, 32, 18, 8, 2

balentzia-elektroi	2 ⓘ

electron configuration	[Rn] 7s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s²

Oxidazio-egoera	2
Elektronegatibotasun	0.09789 0.9
Electrophilicity Index	0,6982685447294388 eV/particle
materiaren funtsezko egoera

materiaren egoera
materiaren egoera gaseoso
Boiling Point
Melting Point	969,15 K
critical pressure
critical temperature
Puntu hirukoitz
appearance
kolore	Black #ffffff #007d00 #007d00
appearance	silvery white metallic
errefrakzio-indize
thermodynamic material property
Thermal Conductivity
Bero-dilatazio
molar heat capacity
Specific Heat Capacity
indize adiabatiko
electrical properties
type	Conductor
Eroankortasun elektriko	1 MS/m
Erresistibitate elektriko	0,000001 Ω*m
Supereroankortasun
Magnetismo
type
suszeptibilitate magnetiko (Mass)
suszeptibilitate magnetiko (Molar)
suszeptibilitate magnetiko (Volume)
magnetic ordering
Curieren tenperatura
Néel temperature
egitura
Crystal Structure	{ERROR}
lattice constant
Lattice Angles	π/2, π/2, π/2
materialen propietate mekaniko
Gogortasun
konprimagarritasun-modulu
Zizaila modulua
Youngen modulu
Poissonen modulu
Soinuaren lastertasun
classification
Category	Actinides, Alkaline earth metals
CAS Group	IIA
IUPAC Group	IIA
Glawe Number	13
Mendeleev Number	10
Pettifor Number	13
Geochemical Class	U/Th decay series
Goldschmidt classification	litophile

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Gas Basicity
polarizability	246 ± 4 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section	13
Neutron Mass Absorption
zenbaki kuantiko	1S0
talde espazial	229 (Im_3m)

Isotopes of Radium

Stable Isotopes	0
Unstable Isotopes	35
Natural Isotopes	0

²⁰¹Ra

masa-zenbaki	201
neutron number	113
Atomo-Masa Erlatibo	201,012814699 ± 0,000021794 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	20 ± 30 ms
spin	3/2
nuclear quadrupole moment
aurkikuntza-data	2005
parity	-

decay mode	intensity
α (α emission)	100%

²⁰²Ra

masa-zenbaki	202
neutron number	114
Atomo-Masa Erlatibo	202,009742305 ± 0,000016122 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	4,1 ± 1,1 ms
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	2005
parity	+

decay mode	intensity
α (α emission)	100%

²⁰³Ra

masa-zenbaki	203
neutron number	115
Atomo-Masa Erlatibo	203,009233907 ± 0,0000104 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	36 ± 13 ms
spin	3/2
nuclear quadrupole moment
aurkikuntza-data	1996
parity	-

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

²⁰⁴Ra

masa-zenbaki	204
neutron number	116
Atomo-Masa Erlatibo	204,006506855 ± 0,00000958 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	60 ± 9 ms
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1995
parity	+

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

²⁰⁵Ra

masa-zenbaki	205
neutron number	117
Atomo-Masa Erlatibo	205,006230692 ± 0,000024446 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	220 ± 50 ms
spin	3/2
nuclear quadrupole moment
aurkikuntza-data	1987
parity	-

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

²⁰⁶Ra

masa-zenbaki	206
neutron number	118
Atomo-Masa Erlatibo	206,003827842 ± 0,000019332 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	240 ± 20 ms
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1967
parity	+

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

²⁰⁷Ra

masa-zenbaki	207
neutron number	119
Atomo-Masa Erlatibo	207,00377242 ± 0,000062572 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	1,38 ± 0,18 s
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1967
parity	-

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

²⁰⁸Ra

masa-zenbaki	208
neutron number	120
Atomo-Masa Erlatibo	208,001855012 ± 0,000009686 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	1,11 ± 0,045 s
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1967
parity	+

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

²⁰⁹Ra

masa-zenbaki	209
neutron number	121
Atomo-Masa Erlatibo	209,001994902 ± 0,000006169 Da
g-factor	0,3444 ± 0,0052
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	4,71 ± 0,08 s
spin	5/2
nuclear quadrupole moment	0,39 ± 0,04
aurkikuntza-data	1967
parity	-

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

²¹⁰Ra

masa-zenbaki	210
neutron number	122
Atomo-Masa Erlatibo	210,000475406 ± 0,000009868 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	4 ± 0,1 s
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1967
parity	+

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

²¹¹Ra

masa-zenbaki	211
neutron number	123
Atomo-Masa Erlatibo	211,000893049 ± 0,000005331 Da
g-factor	0,3496 ± 0,0016
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	12,6 ± 1,2 s
spin	5/2
nuclear quadrupole moment	0,46 ± 0,04
aurkikuntza-data	1967
parity	-

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

²¹²Ra

masa-zenbaki	212
neutron number	124
Atomo-Masa Erlatibo	211,999786619 ± 0,000011007 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	13 ± 0,2 s
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1967
parity	+

decay mode	intensity
α (α emission)
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²¹³Ra

masa-zenbaki	213
neutron number	125
Atomo-Masa Erlatibo	213,000370971 ± 0,00001054 Da
g-factor	1,22 ± 0,004
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	2,73 ± 0,05 m
spin	1/2
nuclear quadrupole moment	0
aurkikuntza-data	1955
parity	-

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

²¹⁴Ra

masa-zenbaki	214
neutron number	126
Atomo-Masa Erlatibo	214,00009956 ± 0,000005636 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	2,437 ± 0,016 s
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1967
parity	+

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

²¹⁵Ra

masa-zenbaki	215
neutron number	127
Atomo-Masa Erlatibo	215,002718208 ± 0,00000773 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	1,669 ± 0,009 ms
spin	9/2
nuclear quadrupole moment
aurkikuntza-data	1967
parity	+

decay mode	intensity
α (α emission)	100%

²¹⁶Ra

masa-zenbaki	216
neutron number	128
Atomo-Masa Erlatibo	216,003533534 ± 0,000008592 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	172 ± 7 ns
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1972
parity	+

decay mode	intensity
α (α emission)	100%
ϵ (electron capture)	1%

²¹⁷Ra

masa-zenbaki	217
neutron number	129
Atomo-Masa Erlatibo	217,006322676 ± 0,000007564 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	1,95 ± 0,12 us
spin	9/2
nuclear quadrupole moment
aurkikuntza-data	1970
parity	+

decay mode	intensity
α (α emission)	100%

²¹⁸Ra

masa-zenbaki	218
neutron number	130
Atomo-Masa Erlatibo	218,007134297 ± 0,000010528 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	25,91 ± 0,14 us
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1970
parity	+

decay mode	intensity
α (α emission)	100%

²¹⁹Ra

masa-zenbaki	219
neutron number	131
Atomo-Masa Erlatibo	219,010084715 ± 0,000007315 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	9 ± 2 ms
spin	7/2
nuclear quadrupole moment
aurkikuntza-data	1952
parity

decay mode	intensity
α (α emission)	100%

²²⁰Ra

masa-zenbaki	220
neutron number	132
Atomo-Masa Erlatibo	220,011027542 ± 0,000008153 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	18,1 ± 1,2 ms
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1949
parity	+

decay mode	intensity
α (α emission)	100%

²²¹Ra

masa-zenbaki	221
neutron number	133
Atomo-Masa Erlatibo	221,013917293 ± 0,00000497 Da
g-factor	−0,0716 ± 0,00068
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	25 ± 4 s
spin	5/2
nuclear quadrupole moment	1,92 ± 0,06
aurkikuntza-data	1949
parity	+

decay mode	intensity
α (α emission)	100%
14C	1.2%

²²²Ra

masa-zenbaki	222
neutron number	134
Atomo-Masa Erlatibo	222,015373371 ± 0,000004781 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	33,6 ± 0,4 s
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1948
parity	+

decay mode	intensity
α (α emission)	100%
14C	3%

²²³Ra

masa-zenbaki	223
neutron number	135
Atomo-Masa Erlatibo	223,018500648 ± 0,000002243 Da
g-factor	0,17946666666667 ± 0,00053333333333333
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	11,4352 ± 0,001 d
spin	3/2
nuclear quadrupole moment	1,22 ± 0,03
aurkikuntza-data	1905
parity	+

decay mode	intensity
α (α emission)	100%
14C	8.9%

²²⁴Ra

masa-zenbaki	224
neutron number	136
Atomo-Masa Erlatibo	224,020210361 ± 0,000001944 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	3,6316 ± 0,0014 d
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1902
parity	+

decay mode	intensity
α (α emission)	100%
14C	4%

²²⁵Ra

masa-zenbaki	225
neutron number	137
Atomo-Masa Erlatibo	225,023610502 ± 0,000002786 Da
g-factor	−1,46 ± 0,004
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	14,82 ± 0,19 d
spin	1/2
nuclear quadrupole moment	0
aurkikuntza-data	1947
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²²⁶Ra

masa-zenbaki	226
neutron number	138
Atomo-Masa Erlatibo	226,025408186 ± 0,000002068 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	1,6 ± 0,007 ky
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1898
parity	+

decay mode	intensity
α (α emission)	100%
14C	2.6%
2β⁻ (double β⁻ decay)

²²⁷Ra

masa-zenbaki	227
neutron number	139
Atomo-Masa Erlatibo	227,029176205 ± 0,000002089 Da
g-factor	−0,26733333333333 ± 0,00073333333333333
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	42,2 ± 0,5 m
spin	3/2
nuclear quadrupole moment	1,53 ± 0,06
aurkikuntza-data	1953
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²²⁸Ra

masa-zenbaki	228
neutron number	140
Atomo-Masa Erlatibo	228,031068574 ± 0,000002141 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	5,75 ± 0,03 y
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1907
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²²⁹Ra

masa-zenbaki	229
neutron number	141
Atomo-Masa Erlatibo	229,034956703 ± 0,000016576 Da
g-factor	0,19968 ± 0,00056
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	4 ± 0,2 m
spin	5/2
nuclear quadrupole moment	2,99 ± 0,12
aurkikuntza-data	1975
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²³⁰Ra

masa-zenbaki	230
neutron number	142
Atomo-Masa Erlatibo	230,037054776 ± 0,000011053 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	93 ± 2 m
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1978
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²³¹Ra

masa-zenbaki	231
neutron number	143
Atomo-Masa Erlatibo	231,041027085 ± 0,000012206 Da
g-factor	−0,14216 ± 0,00044
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	104 ± 1 s
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1983
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²³²Ra

masa-zenbaki	232
neutron number	144
Atomo-Masa Erlatibo	232,043475267 ± 0,000009823 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	4 ± 0,3 m
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1983
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²³³Ra

masa-zenbaki	233
neutron number	145
Atomo-Masa Erlatibo	233,04759457 ± 0,000009235 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	30 ± 5 s
spin	1/2
nuclear quadrupole moment	0
aurkikuntza-data	1990
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²³⁴Ra

masa-zenbaki	234
neutron number	146
Atomo-Masa Erlatibo	234,0503821 ± 0,000009 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	30 ± 10 s
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1990
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ SF (β⁻-delayed fission)

²³⁵Ra

masa-zenbaki	235
neutron number	147
Atomo-Masa Erlatibo	235,05489 ± 0,000322 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo
spin	5/2
nuclear quadrupole moment
aurkikuntza-data
parity	+

decay mode	intensity
β⁻ (β⁻ decay)

historia

aurkitzailea edo asmatzailea	Pierre and Marie Curie
aurkikuntzaren lekua	France
aurkikuntza-data	1898
etimologia	Latin: radius (ray).
pronunciation	RAY-di-em (ingelesa)

source

Abundance
Abundance in Earth's crust	0,0000009 mg/kg
natural abundance (ozeano)	0,000000000089 mg/L
natural abundance (gizakiaren gorputza)	0,0000000000001 %
natural abundance (Meteoroide)
natural abundance (Eguzkia)
Abundance in Universe	0 %

Nuclear Screening Constants

Radioa on ChemicalAid

Radioa (Ra)

Propietate Fisiko

Magnitude Fisiko

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Isotopes of Radium

201Ra

202Ra

203Ra

204Ra

205Ra

206Ra

207Ra

208Ra

209Ra

210Ra

211Ra

212Ra

213Ra

214Ra

215Ra

216Ra

217Ra

218Ra

219Ra

220Ra

221Ra

222Ra

223Ra

224Ra

225Ra

226Ra

227Ra

228Ra

229Ra

230Ra

231Ra

232Ra

233Ra

234Ra

235Ra

historia

source

Nuclear Screening Constants

²⁰¹Ra

²⁰²Ra

²⁰³Ra

²⁰⁴Ra

²⁰⁵Ra

²⁰⁶Ra

²⁰⁷Ra

²⁰⁸Ra

²⁰⁹Ra

²¹⁰Ra

²¹¹Ra

²¹²Ra

²¹³Ra

²¹⁴Ra

²¹⁵Ra

²¹⁶Ra

²¹⁷Ra

²¹⁸Ra

²¹⁹Ra

²²⁰Ra

²²¹Ra

²²²Ra

²²³Ra

²²⁴Ra

²²⁵Ra

²²⁶Ra

²²⁷Ra

²²⁸Ra

²²⁹Ra

²³⁰Ra

²³¹Ra

²³²Ra

²³³Ra

²³⁴Ra

²³⁵Ra