Which one of the following statements about a zeolite is false

→ Zeolite have cage like structure. Those cages helps to remove small molecules like H2O.→ They removes the cations [Ca+2 & Mg+2] which causes hardness to the hardwater i.e., They are used as cation exchangers.→ Zeolite are aluminium silicates having three dimensional network structure.→ Zeolite are formed by the replacement of Si+4 ions by Al+3 ions.