I think it is 39K because it has less neutrons. But I have no idea.
2007-09-07 02:33:47 · 6 answers · asked by Molly❀ 3 in Science & Mathematics ➔ Chemistry
You can usually tell easilly by looking at the atomic mass in the periodic table - whichever one it is closer too is more abundant. That's because (as other answerers said) the one on the periodic table is weighted by abundance.
In general, if it's between 2 isotopes, you can solve this kind of equation for x:
Atomic weight = (x * isotope1)+(1-x)*isotope 2.
So in your case 39.0983 = x*39 +(1-x)*41.
2007-09-11 07:45:07 · answer #1 · answered by bagalagalaga 5 · 1⤊ 0⤋
Most Abundant Isotope
2016-12-29 19:40:19 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Which Isotope Is More Abundant
2016-11-16 02:02:03 · answer #3 · answered by Anonymous · 0⤊ 0⤋
39K is 93.2581% of all potassium atoms
41K is only 6.7302%
Potassium 39 is the most abundant because it is the most stable isotope, and has the optimum ratio of protons to neutrons in the nucleus.
2007-09-07 02:49:09 · answer #4 · answered by Dave_Stark 7 · 0⤊ 0⤋
Isotopes of potassium
39K 93.26% K is stable with 20 neutrons
40K 0.012% is not stable
half-life=1.277×10^9 y
β- 1.311 40Ca
ε 1.505 40Ar
β+ 1.505 40Ar
41K 6.73% K is stable with 22 neutrons
2007-09-07 02:41:23 · answer #5 · answered by scientific_boy3434 5 · 0⤊ 0⤋
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2016-04-06 00:24:31 · answer #6 · answered by ? 4 · 0⤊ 0⤋