© Copyright 2000 AD, Robert Lanigan-O'Keeffe, Sydney, Australia.
Not for copying, publication or distribution without permission.
The AD 2000 Æther Theory. The Mechanical Atom.

Table 1: Radio Active Elements

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At.No.	Name	Symbol	Isotope	t ½	Decays with
43	Technetium	Tc	99	2.2 x 105 y	ß ¯
61	Promethium	Pm	147	2.6 y	ß ¯
87	Francium	Fr	223	21 m	ß ¯
97	Berkelium	Bk	249	290 d	ß ¯
98	Californium	Cf	251	660 d	ß ¯
========	===========	=====	=======	============	==========
89	Actinium	Ac	227	22 y	ß ¯ , a
========	===========	=====	=======	============	==========
84	Polonium	Po	210	140 d	a
85	Astatine	At	210	8.3 y	a
86	Radon	Rn	222	3.8 d	a
88	Radium	Ra	226	1622 y	a
90	Thorium	Th	232	1.4 x 1010 y	a
91	Protactinium	Pa	231	3.4 x 104 y	a
92	Uranium	U	238	4.5 x 109 y	a
93	Neptunium	Np	237	2.2 x 106 y	a
94	Plutonium	Pu	242	3.8 x 105 y	a
95	Americium	Am	243	7.6 x 103 y	a
96	Curium	Cm	247	4 x 107 y	a
99	Einsteinium	Es	254	280 d	a
100	Fermium	Fm	253	4.5 d	a
========	===========	=====	=======	============	==========
101	Mendelevium	Md	256	0.5 h	Fission event
102	Nobelium	No	255	3 ~ 10 mins.	Fission event