(I) [ Mn ( CO ) 6 ] + , (II) [ Cr ( CO ) 6 ] , (III) [ V ( CO ) 6 ] − are examples of organometallic compounds. Select CORRECT option(s) regarding above given compounds.

Question

(I) [ Mn ( CO ) 6 ​ ] + , (II) [ Cr ( CO ) 6 ​ ] , (III) [ V ( CO ) 6 ​ ] − are examples of organometallic compounds. Select CORRECT option(s) regarding above given compounds.

TestHub · Accepted Answer

The compounds are (I) [ M n ( CO ) 6 ​ ] + , (II) [ C r ( CO ) 6 ​ ] , and (III) [ V ( CO ) 6 ​ ] − . A. All are isoelectronic with 18 valence electrons. B. In (III), V is in -1 oxidation state, leading to maximum back-bonding and thus the weakest C-O bond (longest length). C. [ M n ( CO ) 6 ​ ] has a lower oxidation state than [ M n ( CO ) 6 ​ ] + , making it a better reducing agent.

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Options:(select one or more)

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