Final answer:
Calcium (Ca) has the most properties in common with beryllium (Be) because it is also an alkaline earth metal from Group 2 in the periodic table, sharing similar characteristics like two valence electrons.
Step-by-step explanation:
To identify which element has the most properties in common with beryllium (Be), we need to consider the groups in the periodic table. Beryllium is a member of the Group 2 elements, which are also known as the alkaline earth metals. This group includes beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
These elements are known for being shiny and somewhat reactive, with common characteristics such as having two valence electrons. Based on this information, we can conclude that calcium (Ca) will have the most similar properties to beryllium (Be), as it is in the same group.