Sc (Z = 21) is a transition element but Zn (Z = 30) is not
because [NEET Kar. 2013]
(a) both Sc and Zn do not exhibit variable oxidation states
(b) both Sc³⁺ and Zn²⁺ ions are colourless and form white
compounds
(c) in case of Sc, 3d orbitals are partially filled but in Zn
these are completely filled
(d) last electron is assumed to be added to 4s level in case
of Zn
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option c correct .in this sc shows +1 and +3 oxidation states as transitional states but Zn shows only +2 stable oxidation state so that in d series II B group elements are not transitional group elements .so that except II B all d block elements are called transitional elements
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