Single Choice

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

A$$[Pt(NH_3)_6]^{4+}$$
B$$[Fe(CN)_6]^{4-}$$
C$$[Zn(NH_3)_4]^{2+}$$
D$$[Cu(NH_3)_4]^{2+}$$
Correct Answer

Solution

$$\displaystyle [Cu(NH_3)_4]^{2+}$$ is an exception to EAN rule.

$$\displaystyle EAN = Z -X +Y$$
$$\displaystyle EAN = 29-2+8=35$$
The atomic number of nearest noble gas $$(Kr)$$ is 36.

Note:
$$\displaystyle [Pt(NH_3)_6]^{4+}$$
$$\displaystyle EAN = 78 - 4 + 12 = 86 $$
The atomic number of nearest noble gas $$(Rn)$$ is 86.

$$\displaystyle [Fe(CN)_6]^{4-}$$
$$\displaystyle EAN = 26-2+12=36 $$
The atomic number of nearest noble gas $$(Kr)$$ is 36.

$$\displaystyle [Zn(NH_3)_4]^{2+}$$
$$\displaystyle EAN = 30 -2+8=36$$
The atomic number of nearest noble gas $$(Kr)$$ is 36.

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

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

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

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

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Coordination Compounds

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Coordination Compounds

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