JEE Main 2019 — D And F Block Elements Question with Solution
From: JEE Main 2019 (Online) 11th January Morning Slot
Question
The element that usually does NOT show variable oxidation states is :
Choose an option
Show full solutionCorrect option: C
Correct answer
CSc
Step-by-step explanation
Sc3+ has noble gas configuration hence only +3 exists.
Most common oxidation states of :
(i) Sc : +3
(ii) V : +2, +3, +4, +5
(iii) Ti : +2, +3, +4
(iv) Cu : +1, +2
Most common oxidation states of :
(i) Sc : +3
(ii) V : +2, +3, +4, +5
(iii) Ti : +2, +3, +4
(iv) Cu : +1, +2
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