KCET · Chemistry · Coordination Compounds
Which of the following statements are true about \(\left[\mathrm{NiCl}_4\right]^{2-}\) ?
(a) The complex has tetrahedral geometry
(b) Co-ordination number of Ni is 2 and oxidation state is +4
(c) The complex is \(\mathrm{sp}^3\) hybridised
(d) It is a high spin complex
(e) The complex is paramagnetic
- A a,c,d and e
- B a,b,d and e
- C b,c,d and e
- D a,b,c and d
Answer & Solution
Correct Answer
(A) a,c,d and e
Step-by-step Solution
Detailed explanation
\(\left[\mathrm{Ni} \mathrm{Cl}_4\right]^{-2}\)
\(\mathrm{O}-\mathrm{S}\) of \(\mathrm{Ni}-+2\)
Coordination no. of \(\mathrm{Ni}^{+2}-4\)
\(\mathrm{Cl}^{-}\)is weak field ligand, pairing does not take place
\(\left[\mathrm{NiCl}_4\right]^{-2}\) is paramagnetic
\(\mathrm{O}-\mathrm{S}\) of \(\mathrm{Ni}-+2\)
Coordination no. of \(\mathrm{Ni}^{+2}-4\)
\(\mathrm{Cl}^{-}\)is weak field ligand, pairing does not take place
\(\left[\mathrm{NiCl}_4\right]^{-2}\) is paramagnetic
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