In solid state, exists as
Polymer
Dimer
Monomer
Cyclic trimeric form
As we learnt in
Chlorides of Berryllium and aluminium -
Both have bridged chloride structure in vapour phase, soluble in oragnic solvents and are strong lewis acids
- wherein
They are used as friedel craft catalysts
In Solid state, BeCl2 has a ploymeric chain structure. The structure is formed because of electron deficient nature of BeCl2 . The Be atom is surrounded by four Cl atoms in tetrahedral shape, two bounded by covalent bonds and two other by coordinate bonds.
Option 1)
Polymer
This option is correct
Option 2)
Dimer
This option is incorrect
Option 3)
Monomer
This option is incorrect
Option 4)
Cyclic trimeric form
This option is incorrect
BeCl2 exists as single molecule in gaseous state but in solid state it exists as monomer and forms chain polymer