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Crossword clues

Solve these clues to fill the grid.

A radioactive gaseous element formed by the disintegration of radium
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An intensely radioactive metallic element that occurs in minute amounts in uranium ores
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Deriving destructive energy from the release of atomic energy
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An attack that ___ into enemy territory
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An elementary particle with negative charge (plural)
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The 2nd letter of the Greek alphabet
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Any of several trees producing edible oval fruit having a smooth skin and a single hard stone
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A column of light (plural)
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English chemist and physicist who formulated atomic theory and the law of partial pressures
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German physicist who developed the ___ counter
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A person's social heritage: previous experience or training
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A silvery ductile metallic element found primarily in bauxite
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A unit strength of a radioactive source equal to one million disintegrations per second
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A heavy toxic silvery-white radioactive metallic element
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A measured portion of medicine taken at any one time
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A hypothetical description of a complex entity or process
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