Mendeleev's periodic table was widely accepted due to its ability to accommodate new elements, form triads, and make accurate predictions.
Mendeleev's table of elements was better accepted than those of other scientists at the time because it could accommodate new elements, form triads of elements, and had predictive value. Mendeleev left gaps in his table which were later filled by the discovery of elements like gallium, scandium, and germanium, validating his predictions.
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