Which of the following transition complex will have most stable square planar structure?
Correct answer: C. [Cu(NH₃)₄]²⁺
- A. [MnCl₄]²⁻
- B. PCl₅
- C. [Cu(NH₃)₄]²⁺
- D. [Co(NH₃)₆]³⁺
Explanation
Square planar geometry is most commonly observed in complexes with a d⁸ electronic configuration.[Cu(NH₃)₄]²⁺ has a copper(II) ion (Cu²⁺) which has a d⁹ configuration, but it loses one electron to form a stable d⁸ configuration. This makes it the most likely to adopt a square planar structure.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Practise Transition Elements
531 free Transition Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Transition Elements questions
Which of the following states of copper is more stable?
Which element does not show magnetic properties?
Number of unpaired electrons in ferrous ion is:
Lanthanide Contraction is phenomenon of block:
Which of the following complex ions shows square planar geometry?
TiCl4 is used as catalyst for the manufacture of: