actinium

element 89|emanium

Actinium

chemical element with symbol Ac and atomic number 89

Actinium sample (31481701837).png

Ac

Chemical element with atomic number 89 (Ac)

<span lang="en" dir="ltr"><span class="mw-page-title-main">Actinium</span></span>

Actinium is a chemical element; it has symbol Ac and atomic number??89. It was discovered by Friedrich Oskar Giesel in 1902, who gave it the name emanium; the element got its name by being wrongly identified with a substance Andr??-Louis Debierne found in 1899 and called actinium. The actinide series, a set of 15 elements between actinium and lawrencium in the periodic table, is named after actinium. Together with polonium, radium, and radon, actinium was one of the first non-primordial radioactive elements to be discovered.

en

https://upload.wikimedia.org/wikipedia/commons/2/27/Actinium_sample_%2831481701837%29.png

1350366081

https://upload.wikimedia.org/wikipedia/commons/thumb/2/27/Actinium_sample_%2831481701837%29.png/330px-Actinium_sample_%2831481701837%29.png

Actinium

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