Which one of the following statements about the zeolite is false?

Options

A. Some of the `SiO_(4)^(4-)` units are replaced by `AlO_(4)^(5-)` and `AlO_(6)^(9-)` ions in zeolites
B. They are used as cation exchangers
C. They have open structure which enables them to take up small molecules
D. Zeolites are aluminosilicates having three dimensional network

Answer

A