I can not find the official definition for the terms:
Percent Abundance
Relative Abundance
I have tried several book glossaries as searchs…I guess they by themselves don’t have any meaning, but I need this is a chemistry topic sense…any help?
I suspect you are referring to the relative/percent abundance of isotopes.
Relative abundance of a given isotope is the simply the proportion of that isotope in a naturally occurring mixture of isotopes (for that element).
Percent abundance is the relative abundance expressed as a percentage.
You can find isotopic abundances in the Handbook of Chemistry and Physics.
This website may help:
Your help was greatly appreciated…thanks