Why does be is not considered as alkaline earth metal

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KhushiPandey · Answer 1 · 2022-12-27T07:20:23+0000

Be is very different than the other members Mg, Ca, Sr, and Ba in that it forms covalent bonds. This is evident from the

much lower boiling and melting point of its salts compared to the other group 2 elements.
In addition, beryllium hydroxide is amphoteric; that is, beryllium can interact to form a positive ion, or it can become part of a negative ion.
Not only can the metal form typical salts, such as beryllium sulfate (BeSO₄), it can also form beryllates such as Na₂Be(OH)₄.
Be has smaller size, high effective nuclear charge, absence of d-orbital. These facts make it different from other members of alkaline earth metals.