Question
Question: Which of the following ions has the maximum magnetic moment?...
Which of the following ions has the maximum magnetic moment?
A
Mn2+
B
Fe2+
C
Ti2+
D
Cr2+.
Answer
Mn2+
Explanation
Solution
(1) Valence shell electron configuration of Mn2+ is 3d5, therefore, has the maximum number of unpaired electrons equal to 5 and, therefore, has maximum magnetic moment.
(2) Valence shell electron configuration of Fe2+ is 3d6, therefore, has the maximum number of unpaired electrons equal to d.
(3) Valence shell electron configuration of Ti2+ is 3d2, therefore, has the maximum number of unpaired electrons equal to b.
(4) Valence shell electron configuration of Cr2+ is 3d4, therefore, has the maximum number of unpaired electrons equal to d.