Chemistry · Periodic Classification of Elements
In 1817, which scientist pointed out that many of the known elements could be arranged by their similarities into groups of three, known as 'triads'?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1John Newlands
- 2Dmitri Ivanovich Mendeleev
- 3Johann Dobereiner✓
- 4Henry Moseley
Correct answer
Johann Dobereiner
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