Chemistry · Periodic Classification of Elements
Which of the following is the appropriate definition of Dobereiner's triads?
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- 1In a group of three chemically similar elements, the atomic mass of the middle element is approximately equal to the average of the atomic masses of the other two elements.✓
- 2Organizing elements into groups based on their atomic numbers and electronegativity.
- 3Arranging elements into groups based strictly on their isotopic abundance.
- 4Organizing elements into groups based solely on their physical states.
Correct answer
In a group of three chemically similar elements, the atomic mass of the middle element is approximately equal to the average of the atomic masses of the other two elements.
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