1.

Sc (Z=21) is a transition elements but Zn(Z=30) is not because….

Answer»

Both `Sc^(3+) and Zn^(2+)` ions are colourless and form with compounds
In case of Sc, 3d orbitals are partially filled but in Zn these are completely filled
Last ELECTRON is assumed to be added to 4s level in case of zinc
Both Sc and Zn DONOT exhibit VARIABLE oxidation states

Answer :B


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