Bonding in Metal Carbonyls

Q. Three atoms A, B and C crystallize in a cubic solid lattice where A atoms are present at the body centre, B atoms are present at the edge centre as well as at the corners of the cube and C atoms are present at the face centres of the cube. Now if all the atoms are removed from the two 4-fold axis and the one 2-fold axis passing through the cube, then the formula of the compound is

Q. $Xe{F}_6$ is

1. Octahedral

2. Distorted octahedral

3. Planar

4. Tetrahedral

Q.

Which of the following has longest C-O bond length? (Free C-O bond length in CO is 1.128 A.)

1. $\left[Co\right(CO{)}_4{]}^{-}$

2. $\left[Fe\right(CO{)}_4{]}^{2-}$

3. $\left[Mn\right(CO{)}_6{]}^{+}$

4. $Ni(CO{)}_4$

Q. Which of the following statement regarding bonding in metal carbonyls is correct?

Q. The geometry with respect to the central atom of the following molecules are N(SiH3)3 , Me3N, (SiH3)3 P (1) planar, pyramidal, planar (2) planar, pyramidal, pyramidal (3) pyramidal, pyramidal, pyramidal (4) pyramidal, planar, pyramidal (why back bonding is absent in (sih3)3p)

Q. How to check whether a compound shows isomerism or not ?

Q. Which of the following ligands is/are π acceptor(s)?

1. $NO$
2. $N{O}^{+}$
3. $P{F}_3$
4. $H_{2}O$

Q. In $Fe(CO{)}_5$, the Fe - C bond possesses

1. $\pi$ character only
2. Both $\sigma$ and $\pi$ character
3. $\sigma$ character only
4. Cannot be predicted

Q. Is there any way to predict the molecular structure by the structure of hybridization of the central atom of a molecule ?