Question
Which one of the following ions has the maximum magnetic moment?
BITSAT
Chemistry
Chemical Bonding and Molecular Structure
2021
BITSAT 2021
BITSAT Chemistry Question (2021) — Solution
Options
- A. Sc ^ 3+
- B. Ti ^ 3+
- C. Cr ^ 3+
- D. Fe ^ 3+
Answer
D. Fe ^ 3+
Step-by-step solution
Fe ^ 3+ (d^ 5 ) has 5 unpaired electrons therefore magneticmoment = n(n+2) = 5(5+2) =5.91 which is maximum among given options. As Sc ^ 3+ , Ti ^ 3+ , Cr ^ 3+ and V ^ 3+ contain 0,1,3, and 2 number of unpaired electrons respectively.
Related: Chemistry — Chemical Bonding and Molecular Structure · All PYQ Banks