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Radium. Elements with an atomic number greater than 83 are always radioactive.

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16y ago

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Which alkaline earth metals are radioactive?

Radium is the radioactive metal among alkaline earth metals.


What alkaline earth metal is radioactive?

There are two radioactive alkaline earth metals: radium (Ra) and radium (Ra). Both elements have radioactive isotopes that undergo radioactive decay.


What is the heaviest Alkaline-earth metal?

The heaviest alkaline-earth metal is radium. Radium is a highly radioactive element and is the heaviest and most unstable of the alkaline-earth metals.


What is radiums chemical state?

Radium is an alkaline earth metal, radioactive, solid, reactive.


What kind of metal is radium?

Yes. Radium is actually considered an alkaline earth metal. Its colour is nearly pure white, but when exposed to air, it turns black. Radium is also extremely radioactive. A link is provided to the Wikipedia article on radium.


Radioactive element used to treat cancer and is also a alkaline earth metal?

I believe the answer is cobalt (Co).


What class is radium in?

Radium is an alkaline earth metal, group 2, period 7; Ra is a radioactive.


Is aluminum an alkaline earth metal?

No, aluminum is not an alkaline earth metal. Aluminum is a post-transition metal, not an alkaline earth metal. Alkaline earth metals include elements like calcium, magnesium, and barium.


Is beryllium a alkaline metal?

It is an alkaline earth metal.


Is beryllium alkali metal or alkaline earth metal?

It is an alkaline earth element


Is krypton a alkaline earth metal?

It is not an alkaline earth metal it is a noble gas


Is Krypton a alkaline-earth metal?

It is not an alkaline earth metal it is a noble gas