CBSE Class 12 · 2004 · Delhi · Coordination CompoundsShort Answer

Write the IUPAC name and draw the structure of the coordination entity of [PtCl(NH

_{3}

)

_{5}

]Cl

_{3}

Answer: Pentaamminechloridoplatinum(IV) chloride; octahedral Pt⁴⁺ with five NH₃ and one Cl at the six vertices.

Solution

Charges: (−1) + 0 + x = +3 ⇒ Pt is +4.
Name: \textbf{pentaamminechloridoplatinum(IV) chloride}.
Structure: octahedral — Pt at the centre with the five NH

_{3}

molecules and one Cl

^{-}

occupying the six corners of an octahedron (Cl at one apex, NH

_{3}

at the other five positions); the three Cl

^{-}

counter-ions lie outside the sphere.

CBSE Class 12 Board · 2004 · Delhi · Subjective

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