The alkaline earth metals and especially barium.
Polonium and radium are radioactive chemical elements but they have not the same properties.
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.
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 in the alkaline earth metals.
Radium is a non-magnetic metal.
Really none. That is why gold is so valuable. While other metals have similar properties to gold, none of them have the exact same. The closest metals to gold in terms of its properties are silver, platinum and palladium.
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
Metals, nonmetals, and metalloids which are elements that have some of the same properties as metals but not all properties to make them a metal
radium
Radium