How many d electrons are present on the metal ion in the complex ion PtCl₆²^-? A)8 B)6 C)4 D)3 E)2

Name: How many d electrons are present on the metal ion in the complex ion PtCl 6 2 - ? A)8 B)6 C)4 D)3 E)2
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Question

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The metal ion in the complex is Pt, which has an atomic number of 78. Its electronic configuration is [Xe] 4f14 5d9 6s1. Since it is in a complex ion, it has lost two electrons to become Pt2+. This means that it has 5 d electrons left. Therefore, the answer is B, 6 d electrons.

How Many D Electrons Are Present on the Metal Ion