Which of the following ions forms complexes w | vedclass

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(A) The coordination number of a metal ion in a complex depends on its electronic configuration and the nature of the ligands. $Pt^{2+}$ (a $d^8$ meta

Vedclass · Accepted Answer

$Pt^{2+}$

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(A) The coordination number of a metal ion in a complex depends on its electronic configuration and the nature of the ligands. $Pt^{2+}$ (a $d^8$ metal ion) typically forms square planar complexes with a coordination number of $4$. $Cr^{3+}$ and $Fe^{3+}$ are $d^3$ and $d^5$ ions respectively,which typically form octahedral complexes with a coordination number of $6$. $Pt^{4+}$ is a $d^6$ ion which also typically forms octahedral complexes with a coordination number of $6$. Therefore,$Pt^{2+}$ is the correct answer.

Which of the following ions forms complexes with a coordination number of only $4$?

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