Radium has a half life of around 1600 (various values are quoted, from 1590 to 1620) years
- how long before Radium reduces to 25% of its nuclei?
(a general decay graph from OpenStax college)
Protactinium 234 (a grandchild of Uranium) has a half life of 77 seconds
produce a table showing the % of nuclei present every 10 minutes
a YouTube clip shows an experiment monitoring this decay:
every 10 seconds the count pauses
then there is a 2.5 second delay
until the next 10 second count starts
and so on
the clip states that the background radiation count (to be subtracted) is 6 counts per 10 seconds
- students can plot an accurate graph of this experimental decay
Carbon 14 (used to carbon date ancient artifacts) has a half life of approximately 5700 years
(BBC Bitesize)
- what equation models the link between % and time?
