Q. What is the EAN of nickel in $\left\lbrack Ni(CN)_{4} \right\rbrack^{2 -}?$
A) 32
B) 35
C) 34
D) 36
Explanation
(c)
EAN=(Atomic number $–O.S + 2 \times C.N.)$
Hence, EAN of Ni in $\left\lbrack Ni(CN)_{4} \right\rbrack^{2 -} = (28 - 2 + 2 \times 4) = 34$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.