Question

Which of the following statement(s) is/are true or false ?
$S_1$ : In organometallic compounds, carbon is bonded to metals directly.
$S_2$ : Complexes having $d^0$ or $d^{10}$ configuration of metal ions are always diamagnetic.
$S_3$ : Extra stability of metal carbonyls is explained by synergic bonding.
$S_4$ : In $Fe(CO{)}_5$, the Fe-C bond possesses both $\sigma$ and $\pi$ characteristics.

• A. TTTT
• B. TTFF
• C. FTFT
• D. FTTT

Answer 1

The correct option is A TTTT

Complexes having $d^0$ or $d^{10}$ configuration of metal ions have zero unpaired electron so they are always diamagnetic.
synergic bonding interaction on metal carbonyl complex:
1.)) It strengthens the M-C bond while weakening the C-O bond.
2.))It also leads to shortening of M-C-O Bond length