JEE Main201912 Apr 2019Evening ShiftChemistryCoordination CompoundsActual
The coordination numbers of C o and A l in C o C l e n 2 C l and K 3 A l C 2 O 4 3 , respectively are: (en = ethane-1, 2-diamine)
Options
- A3 and 3
- B5 and 3
- C5 and 6
- D6 and 6
Correct answer
C. 5 and 6
Step-by-step solution
Compound C o C l e n 2 + Since C l - is monodentate ligand, en →   bidentate ligand Co-ordination number = 1 + 2 × 2 = 5 Compound C o C 2 O 4 3 3 - O X 2 - → bidentate ligand co-ordination number =   3   ×   2   =   6