AP EAMCET2007Chemistryd and f Block Elements
Which of the following pair of transition metal ions, have the same calculated values of magnetic moment?
Options
- ATi ²⁺ and V ²⁺
- BFe ²⁺ and Cu ²⁺
- CCr ²⁺ and Fe ²⁺
- DCo ²⁺ and Ti ²⁺
Correct answer
C. Cr ²⁺ and Fe ²⁺
Step-by-step solution
Cr ²⁺(Z=24):[ Ar ] 3 d^4 4 s^0 ; 4 unpaired electrons Fe ²⁺(Z=26):[ Ar ] 3 d^6 4 s^0 ; 4 unpaired electrons Cr ²⁺ and Fe ²⁺ have same number of unpaired electrons, hence they have the same value of magnetic moment.