Why beryllium is not included in Alkali earth metals - Chemistry - The s-Block Elements

Question

Why beryllium is not included in Alkali earth metals?

Chandra Prakash · Accepted Answer

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