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Coordination Entity -
Comparises of a central metal atom or ion bonded to a fixed no of ions or molecules
- wherein
eg:
Coordination entity
Stability of Complex -
Stability of complex is depends on nature of ligands, size of central atom and stability concept.
- wherein
Stability
Stability Constant
Oxidation number of central metal atom -
The charge the central atom would carry if all the ligands are removed along with the electron pairs that are shared with the central atom.
-
(i)![\left [ Co\left ( phen \right ) _{3}\right ]^{2+}\rightarrow\: \: \: \: \: \: \: \: \left [ Co\left ( phen \right ) _{3}\right ]^}](https://learn.careers360.com/latex-image/?%5Cleft%20%5B%20Co%5Cleft%20%28%20phen%20%5Cright%20%29%20_%7B3%7D%5Cright%20%5D%5E%7B2+%7D%5Crightarrow%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5Cleft%20%5B%20Co%5Cleft%20%28%20phen%20%5Cright%20%29%20_%7B3%7D%5Cright%20%5D%5E%7D)
In this case, CFSE value increase.
(ii)![\left [ Zn\left ( phen \right )_{3} \right ]^{2+}\rightarrow \: \: \: \: \: \: \: \left [ Zn\left ( phen \right )_{3} \right ]^{2+}](https://learn.careers360.com/latex-image/?%5Cleft%20%5B%20Zn%5Cleft%20%28%20phen%20%5Cright%20%29_%7B3%7D%20%5Cright%20%5D%5E%7B2+%7D%5Crightarrow%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5Cleft%20%5B%20Zn%5Cleft%20%28%20phen%20%5Cright%20%29_%7B3%7D%20%5Cright%20%5D%5E%7B2+%7D)
(iii)![\left [ Fe\left ( phen \right )_{3}\right ]^{2+}\rightarrow \: \: \: \: \: \: \left [ Fe\left ( phen \right )_{3} \right ]^{3+}](https://learn.careers360.com/latex-image/?%5Cleft%20%5B%20Fe%5Cleft%20%28%20phen%20%5Cright%20%29_%7B3%7D%5Cright%20%5D%5E%7B2+%7D%5Crightarrow%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5Cleft%20%5B%20Fe%5Cleft%20%28%20phen%20%5Cright%20%29_%7B3%7D%20%5Cright%20%5D%5E%7B3+%7D)
(iv)![\left [ Ni\left ( phen \right )_{3} \right ]^{2+}\rightarrow \: \: \: \: \: \: \: \: \: \: \left [ Ni\left ( phen \right ) _{3}\right ]^{3+}](https://learn.careers360.com/latex-image/?%5Cleft%20%5B%20Ni%5Cleft%20%28%20phen%20%5Cright%20%29_%7B3%7D%20%5Cright%20%5D%5E%7B2+%7D%5Crightarrow%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5C%3A%20%5Cleft%20%5B%20Ni%5Cleft%20%28%20phen%20%5Cright%20%29%20_%7B3%7D%5Cright%20%5D%5E%7B3+%7D)
Option 1)
![\left [ Co\left ( phen \right ) _{3}\right ]^{2+}](https://learn.careers360.com/latex-image/?%5Cleft%20%5B%20Co%5Cleft%20%28%20phen%20%5Cright%20%29%20_%7B3%7D%5Cright%20%5D%5E%7B2+%7D)
Option 2)![\left [ Zn\left ( phen \right ) _{3}\right ]^{2+}](https://learn.careers360.com/latex-image/?%5Cleft%20%5B%20Zn%5Cleft%20%28%20phen%20%5Cright%20%29%20_%7B3%7D%5Cright%20%5D%5E%7B2+%7D)
Option 3)
Option 4)