Radium. Elements with an atomic number greater than 83 are always radioactive.
MH2, M= alkaline earth metal.
It is not a alkaline metal.It is a alkaline earth metal.
Beryllium is an alkaline earth metal.
why nitrogen form compound with alkaline earth metal
Alkaline earth metals are in the second group. Be is the first metal of them.
Radium is the radioactive metal among alkaline earth metals.
Radium.
Radium is an alkaline earth metal, radioactive, solid, reactive.
Radium is an alkaline earth metal, group 2, period 7; Ra is a radioactive.
I believe the answer is cobalt (Co).
Radium is element number 88 with the symbol Ra. Radium is an alkaline earth metal in group 2 of the periodic table. Radium is radioactive and very toxic.
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.
It is an alkaline earth metal.
It is an alkaline earth element
It is not an alkaline earth metal it is a noble gas
It is not an alkaline earth metal it is a noble gas
Group 2 (alkaline earth metals): lithium, sodium, potassium, caesium, rubidium, francium.