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ahrayia [7]
3 years ago
11

What radioactive element has the lowest atomic number

Chemistry
2 answers:
Elina [12.6K]3 years ago
8 0

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.

Alex777 [14]3 years ago
6 0

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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