The hybridization state of the Se central atom in SeCl2 is sp3.
Selenium is an element in group 16 of the periodic table. It has electron configuration; [Ar] 3d10 4s2 4p4. This implies that there are six electrons in its outermost shell. There are two lone pairs on the central selenium atom in SeCl2.
The SeCl2 is sp3 hybridized. Two of the lone pairs occupies hybrid orbitals while the other two hybrid orbitals are used to form sigma bonds to chlorine atoms.
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