JEE Main 2021 (Online) 25th February Evening Shift | Coordination Compounds Question 151 | Chemistry

In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment?

(i) [FeF₆]^3$$-$$

(ii) [Co(NH₃)₆]³⁺

(iii) [NiCl₄]^2$$-$$

(iv) [Cu(NH₃)₄]²⁺

(iii) > (iv) > (ii) > (i)

(ii) > (iii) > (i) > (iv)

(i) > (iii) > (iv) > (ii)

(ii) > (i) > (iii) > (iv)

JEE Main 2021 (Online) 25th February Morning Shift

MCQ (Single Correct Answer)

-1

The hybridization and magnetic nature of $${[Mn{(CN)_6}]^{4 - }}$$ and $${[Fe{(CN)_6}]^{3 - }}$$, respectively are :

sp³d² and diamagnetic

d²sp³ and paramagnetic

sp³d² and paramagnetic

d²sp³ and diamagnetic

JEE Main 2021 (Online) 24th February Evening Shift

MCQ (Single Correct Answer)

-1

The calculated magnetic moments (spin only value) for species $${[FeC{l_4}]^{2 - }}$$, $${[Co{({C_2}{O_4})_3}]^{3 - }}$$ and $$MnO_4^{2 - }$$ respectively are :

5.92, 4.90 and 0 BM

4.90, 0 and 1.73 BM

5.82, 0 and 0 BM

4.90, 0 and 2.83 BM

JEE Main 2020 (Online) 6th September Evening Slot

MCQ (Single Correct Answer)

-1

For a d⁴ metal ion in an octahedral field, the correct electronic configuration is :

$$t_{2g}^4e_g^0$$ when $$\Delta $$₀ < P

$$t_{2g}^3e_g^1$$ when $$\Delta $$₀ > P

$$e_g^2t_{2g}^2$$ when $$\Delta $$₀ < P

$$t_{2g}^3e_g^1$$ when $$\Delta $$₀ < P