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D-block elements: the transition metals in the middle of the periodic table D-electron: responsible for bonding and reactivity Electron configuration: arrangement of electrons in the orbitals of metals
So when I'm saying d and f-Block elements I'm referring to electron configurations and so we know how many valence electrons each of these elements have based on their position in the periodic table. So d-Block elements are what we call transition metals and f-Block elements are what we called inner transition metals.