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Science

eppur_se_muova

(41,399 posts)

3. To be clear, naturally occurring lithium (3Li) is composed of two stable isotopes, Li-6 and Li-7 ...

Reply to NNadir (Original post)

Sun Dec 23, 2018, 11:44 PM

Dec 2018

The former having three neutrons and three protons.

Then there's deuterium (one of each).

Aaaaand boron-10 (five of each).

***BUT*** nitrogen-14 is the heaviest such odd-odd nucleus, so yes, these things are rare. All other stable nuclei except helium-3 (that freak!) have a surplus of neutrons above the one-to-one ratio.

Still absorbing the rest of the article -- anything about O-17 tends to catch my eye, as it's kind of a sleeper in the NMR world (well, last I heard, anyway) IMHO.

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Highlight:

Rare Carbon, Nitrogen, and Oxygen Isotopes Appear Abundant in a Young Planetary Nebula. [View all] NNadir Dec 2018 OP

Ouch. My head hurts. Red Raider 85 Dec 2018 #1

But in a good way. n/t Igel Dec 2018 #2

To be clear, naturally occurring lithium (3Li) is composed of two stable isotopes, Li-6 and Li-7 ... eppur_se_muova Dec 2018 #3

Yes, I stand corrected. Heaviest is appropriate. NNadir Dec 2018 #4

By one of those weird coincidences that keep cropping up, I only recently came across this ... eppur_se_muova Dec 2018 #7

Thank you for that. It appears that the Princeton University library has that Glasstone book. NNadir Dec 2018 #8

I scanned the first 250 pages of that Glasstone book...a fabulous find...Thanks again... NNadir Dec 2018 #9

Thank you for your seemingly limitless insight defacto7 Dec 2018 #5

Thank you for your kind words and support. NNadir Dec 2018 #6