Forgetting whether you know that all, some, or none of the isotopes listed in an
ID: 104245 • Letter: F
Question
Forgetting whether you know that all, some, or none of the isotopes listed in answers A-D are radioactive:
Based on the shell-model;
a) Which of the following isotopes would stand the greatest chance of being stable, that is, not being radioactive? i) Boron - 13, ii) Carbon - 13, iii) Nitrogen - 16, or iv) Oxygen - 18
b) Now assuming all the isotopes listeed in answers i - iv above ARE radioactive; what type of decay process is most likely for all of them? i) alpha decay, ii) beta decay, iii) positron decay, or iv) electron decay
c) Describe what actually takes place in the nucleus when the process you selected in part b occurs. i) A proton being converted into a neutron, ii) An electron being gained from the L shell, iii) A neutron being converted into a proton, iv) The "splitting" of the nucleus into smaller nuclei
Explanation / Answer
(a)
(ii) Carbon - 13 is not being radio active.
(b)
(ii) In all of them there are more number of neutrons than the number of protons, so they undergo beta decay.
(c)
(iii) A neutron being converted into a proton.