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Sodium Isotopes

Submitted by miracle on 15 April 2005 - 11:47am.

Dear mates,
What is the most common isotopes of sodium and the realtive isotopic mass of sodium? I have seen some sites saying that sodium has only 1 naturally occuring isotope while other says that there are 13 isotopes some even says there even more, like this website

http://education.jlab.org/itselemental/iso011.html

Please help me to clarify this problem. If you can, can you tell a little bit more detail about the difference between those so called naturally occuring or those unstable ones. Of cource any help is highly appreciated. Thank you for your help.

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Submitted by Martin17 on 17 April 2005 - 5:54am.

There is only one naturally occurring isotope of sodium, 23Na. There are, however, 18 radioisotopes from 17Na to 35Na, making a total of 19 known isotopes in all; only 22Na and 24Na have more than momentary half-lifes and they have applications as tracers in nuclear medicine. See http://atom.kaeri.re.kr/ton/nuc2.html for a table of known nuclides.

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