Due to small size and high Ionization energy Be always form covalent bonds, but BeH2 is an unstable molecule due to incomplete octet so it forms polymer (BeH2)n.
Boron trifluoride has covalent bonds.
BeO (beryllium oxide) is ionic.
BeF does not exist. BeF2 is ionic.
Covalent
Ionic
covalent
Ionic
This is an ionic compound.
ionic
Ionic
It is ionic
Is CsL ionic or covalent
It is Ionic
Is Ag3N covalent or ionic
Covalent
A nonbinary ionic compound. Covalent bonds are molecular - nonmetal.
Sulfur tetrachloride is a covalent compound.
Covalent, and has a network structure
it is ionic covalent