12). _________ made groups of three elements each, having similar chemical properties and called them
triads.
(a) Newlands (b) Dobereiner
(c) Moseley (d) Mendeleev
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12). _________ made groups of three elements each, having similar chemical properties and called them
triads.
(a) Newlands (b) Dobereiner
(c) Moseley (d) Mendeleev
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Answer:
b)Dobereiner is the ans for the question