Question

Какой элемент самый радиоактивный?

Answer 1

Ответ:

уран

Объяснение:

Самый тяжелый радиоактивный элемент, встречающийся в природе на Земле, — это уран-238, живущий 4,4 миллиарда лет.

Answer 2

The Most Radioactive Element

The most radioactive element is Francium.

Francium is the most unstable of the first 101 elements of the periodic table. It decays into astatine, radium, and radon. It is also the second rarest naturally occurring element (after astatine), with an estimated occurrence of 1 × 10^−18 g in the Earth's crust.

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