Single Choice

Which of the following pair to $$EAN$$ of central metal atom is not same?

A$$[Fe(CN)_{6}]^{3-}$$ and $$[Fe(NH_{3})_{6}]^{3+}$$
B$$[Cr(NH_{3})_{6}]^{3+}$$ and $$[Cr(CN)_{6}]^{3-}$$
C$$[FeF_{6}]^{3-}$$ and $$[Fe(CN_{6})]^{3-}$$
D$$[Ni(CO)_{4}]$$ and $$[Ni(CN)_{4}]^{2-}$$
Correct Answer

Solution

$$EAN=Z-X+Y$$
Z$$=$$Atomic number of the metal
X$$=$$Number of electrons lost during the formation of the metal ion from its atom
Y$$=$$Number of electrons donated by the ligands

For $$[Ni(CO)_4]$$

$$EAN=Z-X+Y=28-0+8=36$$

For $$[Ni(CN)_4]^{2-}=28-2+8=34$$

Thus the EAN of $$[Ni(CO)_4]$$ and $$[Ni(CN)_4]^{2-}$$ is not the same.

SIMILAR QUESTIONS

Coordination Compounds

The effective atomic number of Cr(atomic number$$=24$$) in $$[Cr(NH_3)_6]Cl_3$$ is?

Coordination Compounds

What is` the EAN of $${ \left[ Al{ \left( { C }_{ 4 }{ O }_{ 4 } \right) }_{ 3 } \right] }^{ 3- }$$ ?

Coordination Compounds

Which of following coordinate complexes is an exception to EAN rule ? (Given Atomic Number: $$Pt = 78,\ Fe = 26,\ Zn = 30,\ Cu = 29$$)

Coordination Compounds

If EAN of central metal cation M2+ in a non-chelating complex is 36 and atomic no. of metal M is 26, then the number of monodentate ligand in this complex are

Coordination Compounds

Which of the following is an oxidizing agent?

Coordination Compounds

Choose the correct option regarding the following complex compound which follows $$(F)$$ and does not follow $$(NF)$$ the Sidgwick EAN rule: (I) $$[(Ph_{3}P)_{3}PdCl_{2}PdCl_{2}]$$ (II) $$[NiBrCl(en)]$$ (III) $$Na_{4}[Fe(CN)_{5}NOS]$$ (IV) $$Cr(CO)_{3}(NO)_{2}$$.

Coordination Compounds

Which of the following compound has/have effective atomic number equal to the atomic number of a noble gas?

Coordination Compounds

$$M(CO)_{x} (NO)_{y} \underset {-CO}{\xrightarrow {+NO}}M(NO)_{z}$$ Where $$EAN$$ of metal $$(M)$$ in both product and reactant is same and it is $$54$$. Then calculate value of $$(x + y - z)$$. (where $$x, y$$ and $$z$$ are natural numbers and $$M$$ belong to $$6^{th}$$ group according to long form of periodic table).

Coordination Compounds

Pick out the complex compound in which the central metal atom obeys EAN rule strictly :

Coordination Compounds

In $$[Ni{ \left( { NH }_{ 3 } \right) }_{ 4 }]{ SO }_{ 4 }$$, the E.A.N. of Ni is

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