Stable and unstable isotopes

[@stwopid]

Me, an intellectual: Messing about in school and not learning anything, now fully grown up with a shitty job im watching lectures about isotopes for entertainment.

[@manikanta922]

Nice presentation, very informative, thank you.

[@srivatsanvr]

Very good explanation video. even though I work in Nuclear Industry, I learnt something new today :)

[@RajSharma-hh9bq]

Very very useful and informative for new learners

[@amgaa735]

Thank you. It was easy to understand.

[@medicinalvl-up862]

This lecture was fucking great!! Thank you very much!

[@angelagatti238]

Hi, good explanation. I have a question, Z:N ratio is correct? Because if I observe diagram I understand that with the increase of protons, neutrons increse more, but in the video the value of ratio 1.5 means the contrary (Big Z, Less N). So I think that N:Z is the correct ratio.

[@GeologiadaTerra]

Hey Angela, you are right to notice that, for Z>20, stability is found when there are more neutrons with respect to protons! Thanks! Considering stability, the Z:N ratio when Z20, the Z:N ratio is around 2:3 (40% of Z and 60% of N). Expressing ratios as decimals is done when we are comparing a part to the whole, not one part to another part. I got this from a textbook (Environmental Isotopes in Hydrogeology, Clark and Fritz), not sure why they decided to put it that way. Thank you for pointing this out :)

[@taylorblair196]

But WHY do unstable isotopes decay a certain way? How do you know without the band of stability?

[@chasifaliaraeen1949]

Very nice explanation

[@gemologicalreserchinstitut7838]

It is great lesson. Like see more

[@nuzhatqazi6348]

very nice presentation

[@asianwomenuglyandspreadcov553]

03:23 Isn't 99.795% + 0.204% = 99.999%? How come the last isotope is 0.037%?

[@user-zr6pl6nb6z]

@@a10sminion80 It's not a rounding error, otherwise the difference would not be 0.036. The error would be in the thousandths digit if it were due to rounding.

[@nicholasdavies3071]

Was anyone else expecting to see Ken Berry MD is the comments section of this video?

[@user-zr6pl6nb6z]

3:16 - Your percentages don't add up to 100.

[@zakooora1205]

*thank you very much* ♥♥

[@mr.scratch3.064]

good but not that much

[@josephbishara4791]

That accent sounds Portuguese.

[@GeologiadaTerra]

Joseph Bishara correct! ☺️