Chlorine Y and iodine form a Dobereineer 's triad indetify the atomic wight of y

Explanation

To find the atomic weight of element Y in the Dobereiner's triad consisting of chlorine (Cl), Y, and iodine (I), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Atomic Weights of Chlorine and Iodine:**
- The atomic weight of chlorine (Cl) is approximately 35.5.
- The atomic weight of iodine (I) is approximately 127 (not 130 as mentioned in the transcript).

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