Sc (Z=21) is a transition element but...

Sc (Z=21) is a transition element but Zinc (Z=30) is not because

A

both `SC^(3+)` and `Zn^(2+)` ions are colourles and form white compounds.

B

in case of Sc ed orbital are partially filled but in Zn these are completely filled

C

last electron as assumed to be added to 4s level in case of zinc

D

both Sc and Zn do not exhibit variable oxidation states

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The correct Answer is:

B

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