Periodic Table/Radium/²⁰²Ra

← 201Ra203Ra →

²⁰²Ra

Radium-202

Radioactive· Half-life: 4.10 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

88

Neutrons (N)

114

Mass Number (A)

202

Atomic Mass

202.009742AMU

Spin / Parity

0+

Binding E/A

7.463keV

Natural Abundance

Trace / None

Half-life

4.10 ms

Decay Modesoverview · half-life · α · β⁻ · β⁺

α

100.0%

Decay Chain

²⁰²RaRadium4.10 ms

α100.0%

¹⁹⁸RnRadon64.4 ms

α93.0%

β⁺¹⁹⁸At

¹⁹⁴PoPolonium392 ms

α100.0%

β⁺¹⁹⁴Bi

¹⁹⁰PbLead1.18 min

β⁺99.6%

α¹⁸⁶Hg0.40%

¹⁹⁰TlThallium2.60 min

β⁺100.0%

¹⁹⁰HgMercury20.0 min

β⁺100.0%

α¹⁸⁶Pt

¹⁹⁰AuGold42.8 min

β⁺100.0%

α¹⁸⁶Ir1.00%

¹⁹⁰PtPlatinum483 Gy

α100.0%

2β⁺¹⁹⁰Os

¹⁸⁶OsOsmium2000000 Gy

α100.0%

¹⁸²WTungstenSTABLE

10-step decay chain → stable · Primary path shown · branching ratios indicated

Other Isotopes of Radium

201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235

← Back to RadiumData: IAEA NDS · ENSDF