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JEE Advanced 2008Paper 2
Exam
JEE Advanced
Year
2008
Paper
Paper 2
Subject
Chemistry
Chapter
Coordination Compounds

JEE Advanced 2008 · Paper 2 · Chemistry · Coordination Compounds

Statement 1 The geometrical isomer of the complex .[M_ (NH_3. )_4...

Statement 1 The geometrical isomer of the complex \left.\left[\mathrm{M}_{\left(\mathrm{NH}_3\right.}\right)_4 \mathrm{Cl}_2\right]areopticallyinactive.Statement2Bothgeometricalisomersofthecomplexare optically inactive. Statement 2 Both geometrical isomers of the complex\left[\mathrm{M}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right] possess axis of symmetry.Statement 1 The geometrical isomer of the complex .[M_ (NH_3. )_4 Cl_2] are optically inactive. Statement 2 Both

Options

  1. AStatement 1 is true, Statement 2 is true, Statement 2 is a correct explanation for Statement 1.
  2. BStatement 1 is true, Statement 2 is true, Statement 2 is not a correct explanation for Statement 1.
  3. CStatement 1 is true, Statement 2 is false.
  4. DStatement 1 is false, Statement 2 is true

Correct answer

A. Statement 1 is true, Statement 2 is true, Statement 2 is a correct explanation for Statement 1.

Step-by-step solution

\text{The cis and trans both form of complex }\left[M\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right] \text{are optically inactive }Statement 1 The geometrical isomer of the complex .[M_ (NH_3. )_4 Cl_2] are optically inactive. Statement 2 Both
There are plane of symmetryinadditiontothatthereisalternateaxisofsymmetry(Cn)whichalsocausestheiropticalinactivity.Amoleculepossessessymmetry in addition to that there is alternate axis of symmetry \left(C_n\right) which also causes their optical inactivity. A molecule possessesnfoldalternatingaxisofsymmetry,ifwhenrotatedthroughanangleoffold alternating axis of symmetry, if when rotated through an angle of360^{\circ} / n\mathrm{n} about the axis and then followed by reflection in a plane perpendicular to the axis, the molecule is indistinguishable from the original molecule.
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