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P-1 Periodic Classification of Element — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceP-1 Periodic Classification of Element1 Mark
Question
Two pairs of Dobereiner's triad.
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Answer

(i) Lithium (Li), Sodium (Na), Potassium (K) (ii) Chlorine (Cl), Bromine (Br), Iodine (I).

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