<span>Which best explains why some radioisotopes decay in a decay series?
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The correct answer is:
Some unstable materials decay radioactively into other unstable materials.
</span>Radioactive decay a the spontaneous process through which an unstable atomic nucleus breaks into smaller, more stable fragments. <span>It's basically a matter of thermodynamics. Every atom seeks to be as stable as possible. In the case of radioactive decay, instability occurs when there is an imbalance in the number of </span>protons<span> and </span>neutrons<span> in the atomic nucleus.</span>
For this, we can use the equation E = mcΔt.
Where E = energy, m = mass of water, c = specific heat capacity of water (4.18), Δt = temperature change (15 degrees or 288 K)
So therefore we do 50 x 4.18 x 288 = 60192 J
Hope this helps, let me know if you have any questions:)
The mass numbers of the different isotopes of that element are averaged according to their respective abundances in nature.
Im pretty sure all of them are compounds