Asked by Nathan

I've exhausted possibilities to find an isotope that has 42 protons and 44 neutrons; does one exist? Molybdenum has 42 protons ... but 54 neutrons so that isn't it. I'm hoping that Dr. Bob can figure this one out for me! You've been helpful with a prior question that I submitted and I'm grateful for your expertise.
Answered by Dr Russ
Not hard to find see

http://en.wikipedia.org/wiki/Isotopes_of_molybdenum

or the table of isotopes in 'Handbook of chemistry and physics'

Mo-86 is a positron emitter with a half life of 19.6 s

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