UPSC Combined Geo-Scientist, Mains · 2020 · Mains Paper I

Q11(c). NiCl₄²⁻, PdCl₄²⁻ and PtCl₄²⁻: structure and magnetism

5 marks
Topic: Chemistry of d- and f-block elements
Question only

Question

Compare [NiCl₄]²⁻, [PdCl₄]²⁻ and [PtCl₄]²⁻ with respect to structure and magnetic properties.

Model answer

The free solution for 2020 answers questions 1, 3, 4, 7, 8 and 10, the ones picked in its time plan. This part is not answered on the site yet. New answers are announced on Telegram.

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CoversNiCl4 2-PdCl4 2-tetrahedral vs square planar4d and 5d

All parts of Question 11

11(a) Variable oxidation states of Cr and Mn10 marks
11(b) Lanthanide ionic radii and ion-exchange separation10 marks
11(c) NiCl₄²⁻, PdCl₄²⁻ and PtCl₄²⁻: structure and magnetism5 marks
11(d) AmO₂⁺ oxidising, Bk³⁺ reducing5 marks