Which of the following complex ions has the l | vedclass

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(B) The stability of a coordination complex depends on the oxidation state of the central metal ion and the nature of the ligands. $1$. Higher oxidati

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$[Co(NH_3)_6]^{2+}$

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(B) The stability of a coordination complex depends on the oxidation state of the central metal ion and the nature of the ligands. $1$. Higher oxidation state of the central metal ion generally leads to greater stability due to stronger electrostatic attraction. $2$. $[Co(NH_3)_6]^{2+}$ contains $Co^{2+}$,whereas $[Co(CN)_6]^{3-}$ and $[Co(NH_3)_6]^{3+}$ contain $Co^{3+}$. $3$. Among the given options,$[Co(NH_3)_6]^{2+}$ has the lowest oxidation state $(+2)$,making it the least stable complex compared to those with $Co^{3+}$ ions. Therefore,the correct option is $B$.

Which of the following complex ions has the least stability?

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