Table 2 Ion hydration number, hydration numbers, and hydration radius of Na+ in Na-MMT.

From: Influence of inorganic and organic salts on the hydration mechanism of montmorillonite based on molecular simulation

The hydration degree

Ion coordination number

Ion hydration number

Ion hydration radius

1 layer

4.48

3.09

3.10

2 layers

3.28

2.26

2.80

3 layers

3.15

2.17

2.77