Re: [Phys-l] question on radioactivity of Tc and Pm

[Eric Scerri <scerri@chem.ucla.edu>]

Thanks Brian,

But I am taking "radioactive element" to mean an element all of whose  
isotopes are radioactive.

I am taking it in the sense shown on periodic tables where a symbol  
is used to denote whether it is or is not radioactive which I take to  
mean in the sense above.


regards,
eric scerri



On Mar 5, 2007, at 4:14 AM, Brian Whatcott wrote:

> Without pausing to weigh the merits of the old aphorism about
>   fools rushing in, I merely note that there is no element without
>   a radioactive form, as a sweeping generalization.
>
>
>
> Brian Whatcott    Altus OK    Eureka!
>
>
> _______________________________________________
> Forum for Physics Educators
> Phys-l@carnot.physics.buffalo.edu
> https://carnot.physics.buffalo.edu/mailman/listinfo/phys-l



------------------------------------------------------------------------ 
------------------------------------------------------------------------ 
-------------
The Periodic Table: Its Story and Its Significance, by Eric Scerri,  
Oxford University Press, 2006.

       "An absolutely gorgeous book.  I put it on my bedside table  
and then stayed up half the night reading it - it is immensely  
readable."
           ---Oliver Sacks, author of The Man Who Mistook his Wife  
for a Hat, Awakenings etc.
------------------------------------------------------------------------ 
------------------------------------------------------------------------ 
---------------------------------------------

Dr. Eric Scerri
Department of Chemistry & Biochemistry,
Charles Young Drive,
Los Angeles,
CA 90095-1569.

310 206 7443
fax: 310 206 2061

UCLA faculty web page:   http://www.chem.ucla.edu/dept/Faculty/scerri/

Editor of Foundations of Chemistry,
http://www.springer.com/sgw/cda/frontpage/0,11855,4-40399-70-35545882- 
detailsPage%253Djournal%257CmostViewedArticles%257CmostViewedArticles, 
00.html

International Society for the Philosophy of Chemistry,
http://ispc.sas.upenn.edu/