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Which of the following metals from polyn...

Which of the following metals from polynuclear complex ?

A

Ti

B

V

C

Cr

D

Mn

Text Solution

Verified by Experts

The correct Answer is:
D
Odd electron complexes may achieve stability by accepting an electron. For example, `V(CO)_(6)` is a 17 electron species. It readily completes form a reducing agent.
`V(CO)_(6) + Na rarr Na^(+) [V(CO)_(6)]^(-)`
`17 bar e` `18 bar e`
Other old electerons species acquire an additional electron by dimerzing with another molecule. For example, `Mn(CO)_(5)` has 17 electrons. Two molecules 'share' their odd electron in order to form a Mn-Mn bond. Consequently each Mn becomes an 18 electron species.
`2Mn(CO)_(5) rarr Mn_(2)(CO)_(10)`
`17 bar e` `18 bar e`
Cobalt has an odd number of electrons, so the carbonyl compound `Co(CO)_(8)` has 17 electrons and dimerizes to givec `CO_(2)(CO)_(8)` .
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Knowledge Check

  • Which of the following metals from amphoteric oxides?

    A
    `Be, A1, Ga, Sn`,and `Pb`
    B
    `A1,Ga,Sn`, and `Pb`
    C
    `Sn` and `Pb`
    D
    `A1`and `Ga`

  • Which of the following metal ions will form complexes with the same magnetic moment and geometry irrespective of the nature of ligands ?

    A
    `Ni^(2+)`
    B
    `Fe^(2+)`
    C
    `Cu^(2+)`
    D
    `Co^(2+)`

  • Which of the following alkali metals form complex hydrides?

    A
    Li
    B
    K
    C
    Na
    D
    Rb.

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