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protactinium (Pa)

protactinium QUÍM.

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The most abundant, or easy to synthesize actinides are uranium and thorium, followed by plutonium, americium, actinium, protactinium and neptunium. en.wikipedia.org

For example, (protactinium), (beryllium), (chromium), and (lanthanum) are obscure characters meaning raw iron, needle, hook, and harrow respectively. en.wikipedia.org

In all these organs, protactinium promotes cancer via its radioactivity. en.wikipedia.org

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