3 ms·when you burn coal, the residual is also quite radioactive, and the amount is not nothing either.by julienfr112 4y agowhen you burn coal, the residual is also quite radioactive, and the amount is not nothing either.fsh 4y agoNo, coal ash is not particularly radioactive. The amount of radiation released by burning coal is completely insignificant compared to the toxicity of the ash.Gwypaas 4y agoThat's why the alternative isn't coal or other fossil fuels - it is renewables.