2.1 Dobereiner's Triads
an you tell? Identify Dobereiner's triads from the following groups of
elements having similar chemical properties.
1. Mg (24.3), Ca (40.1), Sr (87.6) 2. S (32.1), Se (79.0), Te (127.6)
3. Be (9.07, Mg (24.3), Ca (40.1)
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