Metal Carbonyls

Q.

An example of a sigma bonded organometallic compound is

1. ruthenocene
2. grignard's reagent
3. ​​​​​​ferrocene
4. cobaltocene

Q. Which of the following does not have a metal carbon bond?

1. $K\left[Pt\right(C_2{H}_4\left)C{l}_3\right]$
2. $C_2{H}_{5}MgBr$
3. $\left[Ni\right(CO{)}_4]$
4. $Al(O{C}_2{H}_5{)}_3$

Q.

How Are Hydrides Classified?

Q.

Compare the structures of $H_{2}O$ and $H_2{O}_2$.

Q.

Write the formulae for the following.
Calcium chloride

Q. Most unstable metal carbonyl among the following is 1.Ni(CO)4 2.V(CO)6 3.Fe(CO)5 4.Cr(CO)

Q.

$\left[Ni\right(CO{)}_4]>[Co(CO{)}_4{]}^{-}>[Fe(CO{)}_4{]}^{2-}$ is the correct order with respect to M-C $\pi$ bond. Where M=Ni, Fe, and Co

1. True
2. False

Q. $M{n}_2(CO{)}_{10}$ is an oganometallic compound due to the presence of :

1. Mn - Mn bond
2. Mn - O bond
3. C - O bond
4. Mn - C bond

Q. Iron carbonyl, $Fe(CO{)}_5$ is

1. Trinuclear
2. Tetranuclear
3. Mononuclear
4. Dinuclear

Q. An example of a sigma bonded organometallic compound is

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Q. Metal carbonyls can have formula $M\left(CO{)}_x\right)$, where $x=$ number of $CO$ units coordinated to metal $M$.

1. 2
2. 3
3. 4
4. 5

Q. 12. The metal carbonyl which is most oxidizing among the following is 1). Cr(CO)6 2). Fe(CO)5 3). V(CO)6 4). Ni(CO)4

Q. The shape of methane molecule is:

1. pentahedral
2. tetrahedral
3. hexahedral
4. octahedral

Q. How many minimum no.of C-atoms are required for position & geometrical isomerism in alkene?

1. 4, 3
2. 4, 4
3. 3, 4
4. 3, 3

Q. An example of a sigma bonded organometallic compound is:

1. Ruthenocene
2. Grignard's reagent
3. Ferrocene
4. Cobaltocene

Q. Iron carbonyl, $Fe{CO}_5$ is:

1. Trinuclear
2. Tetranuclear
3. Mononuclear
4. Dinuclear

Q. Assertion :Statement $-$ 1 : Organometallic compounds are those which have one or more metal $-$ carbon bonds. Reason: Statement $-$ 2 : Metallic carbonyls are organometallic compounds having both $\sigma$ and $\pi -$ bonds.

1. Statement $-$ 1 is true, Statement $-$ 2 is true and Statement $-$ 2 is correct explanation for Statement $-$ 1.
2. Statement $-$ 1 is true, Statement $-$ 2 is true and Statement $-$ 2 is NOT the correct explanation for Statement $-$ 1.
3. Statement $-$ 1 is true, Statement $-$ 2 is false.
4. Statement $-$ 1 is false, Statement $-$ 2 is true.

Q. Which of the following statement is correct regarding metal carbonyl?

1. In ${Mn}_2{\left(CO\right)}_{10}$ bond order of $Mn-Mn$ is $0$
2. In ${Fe}_2{\left(CO\right)}_9$ bond order of $Fe-Fe$ is $1$
3. In $Ni{\left(CO\right)}_4$, all bond length are same
4. $Fe{\left(CO\right)}_5$ is diamagnetic

Q. Which of the following has aromatic ring in complex?

1. DMG in dimethyl glyoximate
2. Cyclopentadienyl anion in ferrocene
3. Both $\left(A\right)$ and $\left(B\right)$
4. None of the above

Q. Arrange the following in increasing order of their heat of hydrogenation $(-\Delta H)$.

1. $IV<III<I<II$
2. $I<II<III<IV$
3. $I<II<IV<III$
4. $IV<III<II<I$

Q. The oxidation state of cobalt in the following molecule is:

1. $1$
2. $3$
3. $2$
4. $0$

Q. Of the following, which has three electron bond in its structure ?

1. Nitrous oxide
2. Nitric oxide
3. Dinitrogen trioxide
4. Nitrogen pentoxide

Q. In additional polymerization, unsaturated monomers contain :

1. single bond
2. double bond
3. both A and B
4. triple bond

Q. Assertion :Treatment of chloroethane with a saturated solution of $AgCN$ gives ethyl isocyanide as the major product. Reason: Cyanide $\left(C{N}^{-}\right)$ is an ambident nucleophile.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Plastic sulfur has an octahedral shape.

1. True
2. False

Q. Strongest C-O bond will be in:

1. $\left[Mn\right(CO{)}_6{]}^{+}$
2. $\left[Cr\right(CO{)}_6]$
3. $\left[V\right(CO{)}_6{]}^{-}$
4. Same in all

Q. When $2-butyne$ is treated with $Pd-BaS{O}_4/H_2$; the product formed will be:

1. $1-butene$
2. $trans-2-butene$
3. $cis-2-butene$
4. $2-hydroxybutane$

Q. Common name of bicyclopentadienyl iron (II) is ferrocene. If true enter 1, else enter 0.

Q. In the complex $Fe(CO{)}_x$, the value of x is:

1. 5
2. 4
3. 3
4. 6

Q. Which of the following alkaline earth metal indirectly form a polymeric hydride with three centre bond?

1. $Mg$
2. Both $A$ and $B$
3. none of these
4. $Be$