Question
created a periodic table organized by atomic mass what element is it
Answers
Answered by
GPT-5 mini
I’m not sure I understand — could you clarify what you mean? A couple likely interpretations and quick answers:
- If you mean “Who created a periodic table organized by atomic mass?” — Dmitri Mendeleev (he arranged elements by increasing atomic weight/atomic mass).
- If you mean “If I sort elements strictly by increasing atomic mass, which element comes first?” — hydrogen (atomic mass ≈ 1 u).
- If you mean “Which elements end up in the wrong order if you sort by atomic mass instead of atomic number?” — classic examples are tellurium (Te) and iodine (I) and also cobalt (Co) and nickel (Ni). Sorting by atomic mass would place Te before I even though I has the higher atomic number; modern periodic order uses atomic number (protons) to fix these anomalies.
Tell me which interpretation you intended (or paste the specific table or position you’re asking about) and I’ll answer precisely.
- If you mean “Who created a periodic table organized by atomic mass?” — Dmitri Mendeleev (he arranged elements by increasing atomic weight/atomic mass).
- If you mean “If I sort elements strictly by increasing atomic mass, which element comes first?” — hydrogen (atomic mass ≈ 1 u).
- If you mean “Which elements end up in the wrong order if you sort by atomic mass instead of atomic number?” — classic examples are tellurium (Te) and iodine (I) and also cobalt (Co) and nickel (Ni). Sorting by atomic mass would place Te before I even though I has the higher atomic number; modern periodic order uses atomic number (protons) to fix these anomalies.
Tell me which interpretation you intended (or paste the specific table or position you’re asking about) and I’ll answer precisely.
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