Chemistry - Coordination Chemistry Question with Solution | TestHub

ChemistryCoordination ChemistryWerner theory + calculation of EANMedium2 minQB

ChemistryMediumsingle choice

If given compounds obey EAN rule then for which complex value of $x < 2$ (where x is non zero). (here, $Cp = C_{5} H_{5}^{-}$ )

Answer:

Solution:

EAN rule: Total valence electrons of metal + electrons donated by ligands = 18.

Co = 9 valence electrons.

CO donates 2 electrons each (3 CO → 6 e⁻), NO donates 2 e⁻ (if treated as linear NO⁺).

So, 9+6+2+x=189 + 6 + 2 + x = 189+6+2+x=18 → x=1x = 1x=1, which is < 2.

Therefore, only [Co(CO)₃(NO)_X] satisfies x < 2.

Stream:JEESubject:ChemistryTopic:Coordination ChemistrySubtopic:Werner theory + calculation of EAN

⏱ 2mℹ️ Source: QB

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