The alkaline earth metals and especially barium.
Polonium and radium are radioactive chemical elements but they have not the same properties.
Radium is in the alkaline earth metals.
Calcium and radium are in the same group of the periodic table of Mendeleev (group 2, alkaline earth metals); consequently calcium and radium has similar chemical properties and can be interchangeable in some situations.
There are six metals in group two of the periodic table. These metals are beryllium, magnesium, calcium, strontium, barium, and radium. They are known as the alkaline earth metals and have similar chemical properties.
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.
Radium is a non-magnetic metal.
Radium is generally considered a poor conductor of electricity compared to metals like copper or aluminum. It has a relatively low electrical conductivity due to its position in the periodic table and its metallic properties. However, it can conduct electricity better than non-metals. Overall, while it has some conductive properties, it is not regarded as a good conductor.
See the link below for detailed informations about radium.
Elements in the same family-assuming family means classifications such as non-metals, metals-have similar properties.
no
Radium is in the group 2 (alkaline earth metals) of the periodic table of Mendeleev.
Polonium and radium are natural chemical elements, metals, solid, very radioactive.