Question

Effective atomic number of the central metal ion, $Pt$, in the complex ${\left[Pt{\left(N{H}_3\right)}_6\right]}^{4+}$ is: (The atomic no. of $Pt$ is $78$)

• A. 74
• B. 90
• C. 86
• D. 84

Answer 1

Answer: (C)

EAN of $Pt=Z-ON+2\times L$
$=78-(+4)+2\times 6=86$