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Question
Identify Dobereiner’s triad from the following groups of elements having similar chemical properties.
- Mg (24.3), Ca (40.1), Sr (87.6)
- S (32.1), Se (79.0), Te (127.6)
- Be (9.0), Mg (24.3), Ca (40.1)
Classify
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Solution
Dobereiner's triads:
2. S (32.1), Se (79.0), Te (127.6)
3. Be (9.0), Mg (24.3), Ca (40.1)
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