Q. The coordination number in a/an ……… complex may increase to 8.

A) Cobalt
B) Osmium
C) Nickel
D) Iron
Explanation

(b)
Os (Z=76) : [Xe] $4f^{14},\ 5d^{6},6s^{2}$
Hence, the coordination number in an osmium complex may increase to 8.

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.