Which of the following facts about the complex CrNH36Cl3 is wrong?

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The complex involves d2sp3 hybridization and is octahedral in shape

The complex is paramagnetic

The complex is an outer orbital complex

The complex gives white precipitate with silver nitrate solution.

answer is C.

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Detailed Solution

ln [Cr(NH3)6]3+, Cr exists as Cr3+ ion. The outer orbital electronic configuration of Cr is 3d3 4s0. The orbital diagram is represented byHere, X indicates lone pair of NH3 donated to Cr. Hence,(a) d2sp3-hybridization, octahedral. Thus, correct.(b) There are three unpaired electrons, hence paramagnetic. Thus, correct.(c) d2sp3-inner orbital complex, thus incorrect.(d) Due to ionizable Cl- ions, white precipitate with AgNO3, thus correct.Therefore, (3) is wrong.

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