question_answer

\[{{S}_{1}}\]: In organometallic compounds, carbon must be bonded to metal/metalloids directly.

\[{{S}_{2}}\]: Complexes having \[d{}^\circ \] or \[{{d}^{10}}\] configuration of metal ion 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 possess both \[\sigma \] and \[\pi \] characters.

A) TTTT                           

B)  TTFF         

C) FTFT                            

D) FTTT