Q. Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states?
A) 3d⁵4s¹
B) 3d⁵4s²
C) 3d²4s²
D) 3d³4s²
Explanation
[Solution from source] 3d⁵4s² (manganese) has seven electrons that can take part in bonding and shows oxidation states from +2 up to +7, the widest range here. 3d⁵4s¹ (Cr) goes up to +6, and the others to +4 and +5. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.