ryanspence5215 ryanspence5215

23-01-2019
Chemistry

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What radioactive element has the lowest atomic number

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dijanahensley02 dijanahensley02

23-01-2019

Technetium, with atomic number (denoted Z) 43, is the lowest-numbered element in the periodic table of which all isotopes are radioactive. The second-lightest exclusively radioactive element, promethium, has an atomic number of 61.

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18-02-2019

Technetium, with atomic number (denoted Z) 43, is the lowest-numbered element in the periodic table of which all isotopes are radioactive. The second-lightest exclusively radioactive element, promethium, has an atomic number of 61.

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