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Elements of the Radium Family
On the basis of ore at radio-
active equilibrium containing
1 grata of radium the following
quantities of radioactive ele-
Atomic
ments are present in the ore at
Element
No. Rediation Half Life
any one point of tine
Urenium I (Uranium 238) 92
Alpha
4.67 x 109 yrs.
3000kilograns
Uranium X1 (Thorium 234)
90
Beta
24.6 days
0.04 milligrans
Dranium x2
234)
91
Beta*
1.15 min.
0.0013 micrograms
Dranium II (Uranium 234)
92
Alpha
2 x 106 yrs.
1.18 kilogreus
Ionium (Thorium 230)
90
Alpha
6.9 x 104 yrs.
41 grams
Radium (226)
**
88
Alpha
1590 yrs.
1 gran
Radon (222)
86
Alpha
3.85 days
6.25 micrograns
Radium A (Polonium 218)
84
Alpha
3.0 uin.
0.0034
"
Radium B (Lead 214)
82
Beta*
26.8 min.
0.030 e
Radium e (Bisuuth 214)
83
Betasd
19.5 uin.
0.022
n
Radium C' (Polonium 214)
84
Alpha
1
Very small
10,000 sec.
Radium D (Lead 210)
82
Beta & Gomma
16 years
918 milligrams
Radium E (Bissuth 210)
83
Beta
5.0 days
811 micrograns
Radium F (Polomium 210)
84
Alpha
140 days
0.22 milligrans
Badium G (Good 206)
82
Stable
* Evidence of weak Ganna radiation, but not used.
*** Evidence of weak Beta and Gamma radiation, but not used.
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"ocrText": "Elements of the Radium Family\nOn the basis of ore at radio-\nactive equilibrium containing\n1 grata of radium the following\nquantities of radioactive ele-\nAtomic\nments are present in the ore at\nElement\nNo. Rediation Half Life\nany one point of tine\nUrenium I (Uranium 238) 92\nAlpha\n4.67 x 109 yrs.\n3000kilograns\nUranium X1 (Thorium 234)\n90\nBeta\n24.6 days\n0.04 milligrans\nDranium x2\n234)\n91\nBeta*\n1.15 min.\n0.0013 micrograms\nDranium II (Uranium 234)\n92\nAlpha\n2 x 106 yrs.\n1.18 kilogreus\nIonium (Thorium 230)\n90\nAlpha\n6.9 x 104 yrs.\n41 grams\nRadium (226)\n**\n88\nAlpha\n1590 yrs.\n1 gran\nRadon (222)\n86\nAlpha\n3.85 days\n6.25 micrograns\nRadium A (Polonium 218)\n84\nAlpha\n3.0 uin.\n0.0034\n\"\nRadium B (Lead 214)\n82\nBeta*\n26.8 min.\n0.030 e\nRadium e (Bisuuth 214)\n83\nBetasd\n19.5 uin.\n0.022\nn\nRadium C' (Polonium 214)\n84\nAlpha\n1\nVery small\n10,000 sec.\nRadium D (Lead 210)\n82\nBeta & Gomma\n16 years\n918 milligrams\nRadium E (Bissuth 210)\n83\nBeta\n5.0 days\n811 micrograns\nRadium F (Polomium 210)\n84\nAlpha\n140 days\n0.22 milligrans\nBadium G (Good 206)\n82\nStable\n* Evidence of weak Ganna radiation, but not used.\n*** Evidence of weak Beta and Gamma radiation, but not used."
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