What criterion is followed for the selection of the stationary phase in chromatography?

Explanation

To determine the appropriate stationary phase in chromatography, several criteria must be considered. Here’s a step-by-step breakdown of the selection criteria:

### Step-by-Step Solution:

1. **High Adsorption Power**: The stationary phase should possess a high adsorption power. This means it should be able to attract and hold onto the analytes effectively, allowing for better separation during the chromatographic process.

2. **Selectivity**: The stationary phase should be selective, meaning it can differentiate between various compounds based on their chemical properties. This selectivity is crucial for achieving efficient separation of components in a mixture.

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