Radium is an alkali metal.
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The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
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radium is the element of group 18 which are also known as inert elements because their outermost electron are fully filled. radium is a radioactive element which emits alpha, beta, and gama rays ( radioactive rays).
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