Chemistry, 17.07.2019 10:30 babyleah2826

What do scandium, gallium and germanium have in common? a) they all had the properties that mendeleev had predicted when he first published his periodic table. b) all three of these elements have the same number of protons and neutrons and the same properties. c) they were all discovered by mendeleev before he published the first periodic table. d) all three of these elements have the same atomic number and atomic mass and the same properties.

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What do scandium, gallium and germanium have in common? a) they all had the properties that mendele...