What is the hybridization of the central atom in the beryllium hydride (BeH2) molecule?
The central atom in the beryllium hydride (BeH2) molecule is beryllium (Be). Beryllium has two valence electrons and can form two sigma bonds. In order to form these sigma bonds, the electron configuration in the ground state of beryllium changes from 1s^2 to 2s^2.
To determine the hybridization of the central atom, we can use the concept of hybrid orbital theory. The hybridization of an atom is determined by the number of sigma bonds and lone pairs around the central atom. In the case of beryllium, there are two sigma bonds around the central atom.
Thus, we can conclude that the hybridization of the central atom in BeH2 is sp.
The two hybrid orbitals of beryllium in BeH2 are formed by hybridizing the 2s orbital and one of the 2p orbitals. The other 2p orbital remains unhybridized and holds the lone pair of electrons.