Identify the incorrect pair.

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Question

(B) $Co^{2+}$ is the central metal ion in Vitamin $B_{12}$.$Mg^{2+}$ is the central metal ion in chlorophyll,which is essential for photosynthesis.$Fe

Vedclass · Accepted Answer

$Se^{2+} - 	ext{Krebs cycle}$

Vedclass · Answer

(B) $Co^{2+}$ is the central metal ion in Vitamin $B_{12}$.$Mg^{2+}$ is the central metal ion in chlorophyll,which is essential for photosynthesis.$Fe^{2+}$ is the central metal ion in hemoglobin,responsible for oxygen transport.$Se^{2+}$ is not a central metal ion in the Krebs cycle; the Krebs cycle involves various enzymes and cofactors,but selenium is not a primary coordination center in this context. Therefore,the pair $Se^{2+} - 	ext{Krebs cycle}$ is incorrect.

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