Respuesta :
The two elements which have the most similar chemical properties are: Beryllium and Magnesium.
Discussion:
The two elements are present in the Alkali earth metals group of the periodic table.
They are both characterized by the possession of 2 Valence electrons on their outermost shell and as such are able to undergo similar chemical reactions.
Ultimately, beryllium and magnesium have the most similar chemical properties.
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