CO Bond length is longest in
A) \([Mn(CO)_{6}]^{+}\)
B) \([V(CO)_{6}]^{-}\)
C) \([Cr(CO)_{6}\)
. D) \([Ti(CO)_{6}]^{2-}\)

Which of the following species act as reducing agent (A)\([Co(CN)_{6}]^{-4}\) (B) \([Co(NO_{2})_{6}]^{-4}\) (C)\([V(CO)_{6}\)] (D)\([Mn(CO)_{6}\)]

Which of the following complex is having highest M-C bond order? (1) [Ni(CO)_(4)] (2) [Fe(CO)_(5)] (3) [V(CO)_(6)]^(-) (4) [Mn(CO)_(6)]^(+)

The optically active species among the following is: (A) [Cr(NH_(3))_(6)] ^(3+) (B) [Co(CN)_(6)] ^(3-) (C) [Co(gly)_(3)] (D) [Ru(NH_(3))_(6)] ^(3+)

Calculate the effective atomic number of the metal atoms in the following complexes / complex ions. (A) [Cr(CO)_(6)]" "(b)[Fe(CN)_(6)]^(3-) " " (c )[Co(CN)_(6)]^(4-)" " [Ni(NH_(3))_(6)]^(2+) [Cr=24,Fe=26,Co=27 and Ni=28 as atomic numbers]

The pi acceptor ligands are those which possess vacant pi- orbitals in addition to the lone pairs of electrons Which of the following complex ion has the highest C-O bond length ? (a) [V(CO)_(6)]^(o+) (b) Ni(CO)_(4) (c ) Fe(CO)_(5) (d) [Mn(CO)_(6)]^(o+) .

The pi acceptor ligands are those which possess vacant pi- orbitals in addition to the lone pairs of electrons Which of the following complex ion has lowest M-C bond length? (a) [V(CO)_(6)]^(o+) (b) [Mn(CO)_(6)]^(o+) (c ) Ni(CO)_(4) (d) Fe(CO)_(5) .

The pi acceptor ligands are those which possess vacant pi- orbitals in addition to the lone pairs of electrons Which of the following complex// ion has lowest M-C bond order? (a) [V(CO)_(6)]^(o+) (b) Ni(CO)_(4) (c ) Fe(CO)_(5) (d) [Mn(CO)_(6)]^(o+) .