JEE Main 2020 (Online) 2nd September Morning Slot | Coordination Compounds Question 113 | Chemistry

JEE Main 2020 (Online) 2nd September Morning Slot

MCQ (Single Correct Answer)

-1

For octahedral Mn(II) and tetrahedral Ni(II) complexes, consider the following statements:

(I) both the complexes can be high spin.
(II) Ni(II) complex can very rarely be low spin.
(III) with strong field ligands, Mn(II) complexes can be low spin.
(IV)aqueous solution of Mn(II) ions is yellow in colour.

The correct statements are :

(I), (III) and (IV) only

(I) and (II) only

(II), (III) and (IV) only

(I), (II) and (III) only

JEE Main 2020 (Online) 2nd September Morning Slot

MCQ (Single Correct Answer)

-1

Consider that a d⁶ metal ion (M²⁺) forms a complex with aqua ligands, and the spin only magnetic moment of the complex is 4.90 BM. The geometry and the crystal field stabilization energy of the complex is

tetrahedral and – 1.6 $$\Delta $$_t + 1P

octahedral and –2.4 $$\Delta $$₀ + 2P

tetrahedral and –0.6 $$\Delta $$_t

octahedral and –1.6 $$\Delta $$₀

JEE Main 2020 (Online) 9th January Evening Slot

MCQ (Single Correct Answer)

-1

The correct order of the spin-only magnetic moments of the following complexes is :
(I) [Cr(H₂O)₆]Br₂
(II) Na₄[Fe(CN)₆]
(III) Na₃[Fe(C₂O₄)₃] ($$\Delta $$₀ $$>$$ P)
(IV) (Et₄N)₂[CoCl₄]

(III) > (I) > (II) > (IV)

(II) $$ \approx $$ (I) > (IV) > (III)

(III) > (I) > (IV) > (II)

(I) > (IV) > (III) > (II)

JEE Main 2020 (Online) 9th January Evening Slot

MCQ (Single Correct Answer)

-1

The isomer(s) of [Co(NH₃)₄Cl₂] that has/have a Cl–Co–Cl angle of 90°, is/are :

cis only

cis and trans

meridional and trans

trans only