Why is the place of hydrogen in the periodic table a puzzle? | StemPy Lab

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Why is the place of hydrogen in the periodic table a puzzle? | StemPy Lab

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Why is the place of hydrogen in the periodic table a puzzle?

ChemistryMediumHigh School (9–10)GeneralThe Periodic Table › Development of the Periodic Table

Created by StemPy Lab

Why is the place of hydrogen in the periodic table a puzzle?

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← Cobalt has a slightly larger atomic mass than nickel, yet Mendeleev put cobalt first. Why?What problem did isotopes cause for a table arranged by atomic mass? →

More onThe Periodic Table › Development of the Periodic Table

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