Question

Match the column :

Column-I (Complex)	Column-II
(a) $\left[Ni\right(CO{)}_4]$	(p) $s{p}^3$-hybridization
(b) $\left[Co\right(CO{)}_4{]}^{\Theta }$	(q) tetrahedral
(c) $\left[Fe\right(CO{)}_4{]}^{2-}$	(r) E.A.N. is $36$
(d) $\left[Fe\right(CO{)}_5]$	(s) Neutral complex compound
	(t) Central atom is a member of 3d-transition series

• A. $\left(a\right)p,,s,t;\left(b\right)p,q,r,t;\left(c\right)p,r,t;\left(d\right)r,s,t$
• B. $\left(a\right)q,r,s,t;\left(b\right)p,q,r,t;\left(c\right)q,r,t;\left(d\right)r,s,t$
• C. $\left(a\right)p,q,s,t;\left(b\right)p,q,r,t;\left(c\right)p,q,t;\left(d\right)r,s,t$
• D. $\left(a\right)p,q,r,s,t;\left(b\right)p,q,r,t;\left(c\right)p,q,r,t;\left(d\right)r,s,t$

Answer 1

The correct option is D $\left(a\right)p,q,r,s,t;\left(b\right)p,q,r,t;\left(c\right)p,q,r,t;\left(d\right)r,s,t$

(a) $\left[Ni\right(CO{)}_4]$ undergoes $s{p}^3$-hybridization which results in tetrahedral geometry. The E.A.N. is 36. It is a neutral complex compound. The central atom is a member of 3d-transition series.
(b) $\left[Co\right(CO{)}_4{]}^{\Theta }$ undergoes $s{p}^3$-hybridization which results in tetrahedral geometry. The E.A.N. is 36. The central atom is a member of 3d-transition series.
(c) $\left[Fe\right(CO{)}_4{]}^{2-}$ undergoes $s{p}^3$-hybridization which results in tetrahedral geometry. The E.A.N. is 36. The central atom is a member of 3d-transition series.
(d) $\left[Fe\right(CO{)}_5]$ has E.A.N. is 36. It is a neutral complex compound. The central atom is a member of 3d-transition series.