Question

Match the column :

Column-I	Column-II
(a) $\left[Fe\right(CO{)}_4{]}^{2-}$	(p) Complex having lowest bond length of CO ligand
(b) $\left[V\right(CO{)}_6{]}^{-}$	(q) Follow Sidgwick's rule of E.A.N.
(c) $K\left[PtC{l}_3\right(C_2{H}_4\left)\right]$	(r) Synergic bonding is involved in complex/ion
(d) $\left[Fe\right(H_{2}O{)}_{5}NO]S{O}_4$	(s) Complex having highest bond length of CO ligand
	(t) Oragnometallic compound

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

Answer 1

The correct option is A (a) q,r,s,t; (b) p,q,r,t; (c) r,t; (d) r

(a) The complex $\left[Fe\right(CO{)}_4{]}^{2-}$

(q) Follow Sidgwick's rule of E.A.N.

(r) Synergic bonding is involved in complex/ion

(s) Complex having highest bond length of CO ligand

(t) Oragnometalic compound

(b) The complex $\left[V\right(CO{)}_6{]}^{\Theta }$

(p) Complex having lowest bond length of CO ligand

(q) Follow Sidgwick's rule of E.A.N.

(r) Synergic bonding is involved in complex/ion

(t) Oragnometalic compound

(c) The complex $K\left[PtC{l}_3\right(C_2{H}_4\left)\right]$

(r) Synergic bonding is involved in complex/ion

(t) Oragnometalic compound

(d) The complex $\left[Fe\right(H_{2}O{)}_{5}NO]S{O}_4$

(r) Synergic bonding is involved in complex/ion

Effective atomic number (EAN) is number that represents the total number of electrons surrounding the nucleus of a metal atom in a metal complex.

It is composed of the metal atom’s electrons and the bonding electrons from the surrounding electron-donating atoms and molecules.

In Synergic bonding, the ligand donates its electron density to metal and the metal in turn backdonates its electron density to ligand.

The back donation reinforce the sigma bond, and vice versa. This type of bonding has been called the synergic bonding

Organometallic compounds have bonds between metal atom and C atom.