JEE Advanced 2022 · Paper 1 · Chemistry Q17

ChemistryList match+3 / -1Question 53 of 54

LIST-I contains metal species and LIST-II contains their properties.

[Given: Atomic number of Cr = 24, Ru = 44, Fe = 26]

Match each metal species in LIST-I with their properties in LIST-II, and choose the correct option

LIST-I

LIST-II

I → R, T; II → P, S; III → Q, T; IV → P, Q

I → R, S; II → P, T; III → P, Q; IV → Q, T

I → P, R; II → R, S; III → R, T; IV → P, T

I → Q, T; II → S, T; III → P, T; IV → Q, R

Answer and worked solution

Official answer: A

Species	Metal ion	Field	Configuration	Properties
(I) $\ce{[Cr(CN)6]^4-}$	Cr(II), $d^4$	strong	$t_{2g}^4$ , low spin	R, T (also P)
(II) $\ce{[RuCl6]^2-}$	Ru(IV), $d^4$	4d metal, low spin	$t_{2g}^4$	P, S (also R, T)
(III) $\ce{[Cr(H2O)6]^2+}$	Cr(II), $d^4$	high spin	$t_{2g}^3e_g^1$ , 4 unpaired	Q (4.9 BM), T
(IV) $\ce{[Fe(H2O)6]^2+}$	Fe(II), $d^6$	high spin	$t_{2g}^4e_g^2$ , 4 unpaired	P, Q

Only option (A) lists properties that are all correct.

JEE Advanced 2022 · Paper 1, Chemistry question 17