Answer is: beryllium fluoride has sp hybridization.
Beryllium (Be) is metal from group 2 and fluorine (F) is nonmetal from group 17.
Electron configuration of beryllium atom: ₄Be: 1s² 2s².
Electron configuration of fluorine atom: ₉F 1s² 2s² 2p⁵.
In beryllium, one electron from 2s orbital gets excitted to the level of 2p orbital; s and p orbital are hybridized and form two sp-hybridised orbitals arranged in a linear shape.
Two fluorine atoms come closer to beryllium atom and sp hybridised orbitals of Be and p orbital of F get overlapped with each other and make bonds.
