I'm trying to find the mass of a given isotope in terms of amu. The isotope is [itex] ^{210}_{84} Po [/itex], which has a mass of(adsbygoogle = window.adsbygoogle || []).push({}); 209.98285u.

I've tried 84(1.007276u) + 126(1.008665u)

thinking that #protons(proton mass in amu) + #neutrons(neutron mass in amu) = mass in amu, give or take.

Can anyone help?

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# Calculating mass of an isotope

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