Which of the following ions has maximum flocculation value?

Options

A. NaCl
B. `Na_2S`
C. `CN_(43)H_2`
D. `K_2S_4C`

Explanation

To determine which ion has the maximum flocculation value, we need to understand the concept of flocculation value and its relationship with coagulating power.

### Step-by-Step Solution:

1. **Define Flocculation Value**:
- The flocculation value is defined as the minimum concentration of an electrolyte required to cause coagulation (or flocculation) of a colloidal solution.

2. **Understand the Relationship**:
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