Verified Solution • 2025–26 Session
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QNEET-2013-Ch-1573: NEET 2013 Chemistry - Class 12 NEET-2013-Ch-1573 Solution: Sc (Z = 21) is a transition element but Zn (Z = 30) is not…
Sc (Z = 21) is a transition element but Zn (Z = 30) is not because both and ions are colourless and form white compounds. in case of Sc 3d orbitals are partially filled but in Zn these are filled. last electron is assumed to be added to 4s level in case of Zn. both Sc and Zn do not exhibit variable oxidation states.
Multiple Choice Options
- A both Sc 3+ and Zn 2+ ions are colourless and form white compounds.
- B in case of Sc, 3d orbitals are partially filled but in Zn these are filled.
- C last electron is assumed to be added to 4s level in case of Zn.
- D both Sc and Zn do not exhibit variable oxidation states.
Step-by-Step Verified Solution
A transition element must have incomplete
d-subshell. Zinc have completely filled d
subshell having 3d 10 configuration. Hence do
not show properties of transition elements to
any appreciable extent except for their ability to
form complexes.