Provide reason for each of the following: Discarding the law of triad.

Explanation

### Step-by-Step Text Solution

1. **Understanding the Law of Triads**:
The Law of Triads, proposed by Johann Wolfgang Döbereiner, states that when three elements with similar properties are arranged in a triad, the atomic mass of the middle element is approximately equal to the arithmetic mean of the atomic masses of the other two elements.

2. **Example of a Triad**:
For instance, consider the triad of alkali metals: Lithium (Li), Sodium (Na), and Potassium (K). The atomic masses are:
- Lithium: 6.94
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