Posted by Ninan on .
Look at the table of radioactive isotypes below.
Isotype Type of Decay
With the help of a periodic table, predict the element that forms in each case.
I'm confused by this. Am I suppose to research each of the isotypes and find out what element they have or compare it to the elements that are in the periodic table?
U238 for example has 92 protons and therefore 146 neutrons
It loses an alpha particle which is a helium nucleus, 2 protons and 2 neutrons
NOW we have an element with
92 - 2 = 90 protons
238 - 4 = 234 atomic mass ignoring E = mc^2
What has 90 protons?
Th Thorium 232 is usual isotope but we have Th234 at present
Note from wikioedia:
Uranium-238 - Wikipedia, the free encyclopedia
Jump to Radioactivity and decay - . 238U radiates alpha-particles and decays
**** (by way of thorium-234 ****** and protactinium-234) into uranium-234. 234U ...