Chemistry · Periodic Classification of Elements
Which of the following groups of elements constitutes a Dobereiner's triad?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1F(19.0), Cl(35.5), Br(79.9)
- 2N(14.0), P(30.9), As(74.9)
- 3Li(6.9), Na(23.0), K(39.1)✓
- 4B(10.8), Al(27.0), Ga(69.7)
Correct answer
Li(6.9), Na(23.0), K(39.1)
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