The pair in which both the species have the same magnetic moment (spin only) is : (A) [Cr(H2O)6]2+ and [Fe(H2O)6]2+ (B) [Co(OH)4]2– and [Fe(NH3)6]2+ (C) [Cr(H2O)6]2+ and [CoCl4]2– (D) [Mn(H2O)6]2+ and

Question

The pair in which both the species have the same magnetic moment (spin only) is :

(A) [Cr(H2O)6]2+ and [Fe(H2O)6]2+
(B) [Co(OH)4]2– and [Fe(NH3)6]2+
(C) [Cr(H2O)6]2+ and [CoCl4]2–
(D) [Mn(H2O)6]2+ and [Cr(H2O)6]2+

Prashant Kotian · Accepted Answer

Correct answer: A. No. of unpaired e– [Cr(H2O)6]2+ Cr2+ 3d4 t2g1,1,1, eg1,0 [Fe(H2O)6]2+ Fe2+ 3d6 t2g2,1,1, eg1,1 [Fe(NH3)6]2+ Fe2+ 3d6 t2g2,1,1, eg1,1 [Co(OH)4]2– Co2+ 3d7  e2,2, t21,1,1 [CoCl4]2– Co2+ 3d7  e2,2, t21,1,1 [Mn(H2O)6]2+, Mn2+ 3d5 t2g1,1,1, eg1,1 So [Cr(H2O)6]2+ and [Fe(H2O)6]2+ have same magnetic moment (spin only) SECTION – 2 : (Maximum Marks : 20)  This section contains FIVE (05) questions. The answer to each question is NUMERICAL VALUE with two digit integer and decimal upto one digit.  If the numerical value has more than two decimal places truncate/round-off the value upto TWO decimal places.  Full Marks : +4 If ONLY the correct option is chosen.  Zero Marks : 0 In all other cases [kaM 2 ¼vf/kdre vad% 20)  bl [kaM esa ik¡p (05) iz'u gSA izR;sd iz'u

💡 Solution & Explanation

Practice 22,000+ questions like this