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Nuclear Chemistry

Across
Chemical element with symbol Ra and atomic number 88
Substance that has a molecular structure consisting of chiefly or entirely of a large number of similiar units bonded together
Emitting or relating to the emission of ionizing radiation or particles
The conversion of one chemical element or an isotope into another chemical element
The emission of ionizing radiation of particles caused by the spontaneous disintegration of atomic nuclei
Down
Device used to initiate and control a self-sustained nuclear chain reaction
Relating to the nucleus of an atom
Radioactive waste material
Any of the series of fifteen metallic elements from actinium
Chemical element with symbol Rn