ChemistryEasyHigh School (11–12)The Periodic Table › Development of the Periodic TableA-LevelAPBoard ExamIB
Created by StemPy LabWhich statement about Mendeleev's work is true?
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← Asha heats a metal Q from group 2 with a non-metal R from group 15. Working from their valences, which formula fits the product?Mendeleev predicted an element with an oxide of formula E₂O₃, a chloride ECl₃ and a melting point so low that the metal would melt in a warm hand. Which element fitted it? →
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