Which of the following statements about the zeolites is false?

Options

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

Answer

D