Q.2. Besides gallium, which other elements have since been discovered that were left by Mendeléev in his Periodic Table? (any two)
Besides gallium Scandium (Sc) and Germanium (Ge) elements have been discovered for which gaps were left by Mendeleev in his periodic table.
•Germanium (Ge)
•Scandium (Sc)
- are the elements which were discovered later, for which Mendeleev left gaps in his periodic table.