UPSC Combined Geo-Scientist, Mains · 2019 · Mains Paper I
Q4(c). Stability of nickel carbonyl
Question
Why nickel carbonyl is stable?
Answer in brief
Ni(CO)₄ has a closed-shell 18-electron count and strong synergic CO donation/back-donation.
Part of VKC Basic
Read the key points and the full model answer with VKC Basic
VKC Basic (₹999 for 6 months) opens every solved answer, the notes, the handbook and the daily answer archive. Every Mains test series includes it.
The full model answer
As written for the answer booklet: the diagram carries the working, the lines stay short. Read here only; it is not offered as a download.
The handwritten model answer pages open with the VKC plan.
CoversStability of nickel carbonylMetal–carbonyl bonding
All parts of Question 4
- 4(a) Inner- and outer-orbital complexes10 marks
- 4(b) Nickel chloride and cyanide complexes10 marks
- 4(c) Stability of nickel carbonyl10 marks