Which of the followings has a complete d-subshell in atomic as well as cationic state
Correct answer: D. Zn
- A. Sc
- B. Mn
- C. Ti
- D. Zn
Explanation
(A) 21Sc 18[Ar] 4s2 3d1Sc+3 18[Ar] 4sº 3dº (B) 21Ti 18[Ar] 4s2 3d2Ti+3 18[Ar] 4sº 3d1 (C) 25Mn 18[Ar] 4s2 3d5Mn+2 18[Ar] 4sº 3d5 (D) 30Zn 18[Ar] 4s2 3d10. Above electronic configurations of given elements show that Zn has a complete d-orbital. Thus Zn is the correctanswer.
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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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