Various elements have same chemical properties when they have same number of valence electrons in their outermost shell. Simply we can say that, elements in the same group have same chemical properties. Therefore, beryllium, calcium, barium and radium have similar chemical properties. They are alkaline earth metals (group II). Some properties of alkaline earth metals are,
- Readily lose their two outer most electron to form cations with a +2 charge.
Low melting and boiling point.
Low densities.
Thus, we can conclude that beryllium, calcium, barium and radium have similar chemical properties.
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