The element which gains electronic configuration of a noble gas at +3 oxidation state
Correct answer: C. Sc
- A. V
- B. Ti
- C. Sc
- D. Cr
Explanation
21Sc =18[Ar] 4s2 3d121Sc+3 = 18[Ar] 4s° 3d°Scandium in +3 state has same electronic configuration as 18Ar.Ar = 1s22s22p63s23p6
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About Transition Elements
Transition elements are identified by their partially filled d subshells in atoms or common ions. The topic covers the electronic structure of d-block elements, including the filling order of 4s and 3d orbitals, variable oxidation states and the distinction between transition elements and elements with completely filled d subshells.
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