Assertion Reason

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Assertion: [Ni(CO)₄] has a longer C-O bond length than the same in [Cr(CO)₅NH₃]

Reason:There is greater extent of d_Ï€-p_Ï€ backbonding in [Ni(CO)₄] than in [Cr(CO)₅NH₃]

#Chemistry #Organic Chemistry

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voldy ·2009-01-15 20:08:09

st 1 - false
st2 true.

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eureka123 ·2009-01-15 21:41:45

Reason?????

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voldy ·2009-01-16 06:03:46

isn't NH3 a better donor?

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Vivek ·2009-01-17 07:56:25

No i think CO is a better donor,as it creates the strongest ligand field but i agree with ur answer

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prateek punj ·2009-01-17 08:40:55

St 1-false
St 2-true.....

becoz Ni has much electrons as compared to Cr in its 3d-subshell......
therefore, Ni will have a stronger backbonding of transfer of electrons into the valence shell of Carbon of CO.....

Also, since Ni have stronger backbonding that means it have more electrons being shared...therefore the bond length in case of Ni is smaller than as compared in case of Cr.....

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Assertion Reason

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