NEETChemistryCoordination Compounds
Statement 1 The geometrical isomer of the complex . [ M _ ( NH ₃ . )₄ Cl ₂ ] are optically inactive. Statement 2 Both geometrical isomers of the complex [ M ( NH ₃ )₄ Cl ₂ ] possess axis of symmetry.
Options
- AStatement 1 is true, Statement 2 is true, Statement 2 is a correct explanation for Statement 1.
- BStatement 1 is true, Statement 2 is true, Statement 2 is not a correct explanation for Statement 1.
- CStatement 1 is true, Statement 2 is false.
- 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
The cis and trans both form of complex [M ( NH ₃ )₄ Cl ₂ ] are optically inactive There are plane of symmetry in addition to that there is alternate axis of symmetry (C_n ) which also causes their optical inactivity. A molecule possesses n fold alternating axis of symmetry, if when rotated through an angle of 360^ / n about the axis and then followed by reflection in a plane perpendicular to the axis, the molecule is indistinguishable from the original molecule.