Respuesta :
Calcium(Ca) and barium(Ba) are both earth-alkaline metals with comparable properties to one another: they are solid but reactive, and they have simple properties in water.
What is a periodic table?
The periodic table is an organization of all known elements in order of increasing atomic number and repeating chemical characteristics.
They are organized in a tabular format, with a row representing an era and a column representing a group.
Elements are ordered in increasing atomic number order from left to right and top to bottom.
Elements of the same group will have the same valence electron configuration and, as a result, will have comparable chemical characteristics.
Elements in the same period, on the other hand, will have an increasing order of valence electrons.
Ca and Ba are both earth-alkaline metals with comparable properties to one another: they are solid but reactive, and they have simple properties in water.
Hence, the two elements that have similar characteristics will be Ca and Ba
To learn more about the periodic table refer to;
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