Hybridisation

Q. Which of the following compound is having maximum number of atoms in same plane?

1. $B{e}_2{H}_4$
2. $C_3{H}_4$
3. $A{l}_{2}M{e}_6$
4. $B_2{H}_6$

Q.

What do you mean by Hybridization?

Q.

In the organic compound $C{H}_2=CH-C{H}_2-C{H}_2–C\equiv CH$, the pair of hydridised orbitals involved in the formation of: $C_2-C_3$ bond is:
(a) $sp-s{p}^2$ (b) $sp-s{p}^3$ (c) $s{p}^2-s{p}^3$ (d) $s{p}^3-s{p}^3$

Q. What is the hybridization of $N$ in $N(C{H}_3{)}_3$ and $N(Si{H}_3{)}_3$?

1. $s{p}^3\text{and}s{p}^3$
2. $s{p}^3\text{and}s{p}^2$
3. $s{p}^2\text{and}s{p}^3$
4. $s{p}^2\text{and}s{p}^2$

Q. Number of $s{p}^2$ hybrid carbon atoms in aspartame is/are:

Q. Among the following species, identify the isostructural pairs.
$N{F}_3,N{O}_3^{-},B{F}_3,H_3{O}^{+}$

1. $[N{F}_3,N{O}_3^{-}]$ and $[B{F}_3,H_3{O}^{+}]$
2. $[N{F}_3,H_3{O}^{+}]$ and $[N{O}_3^{-},B{F}_3]$
3. None of the above
4. $[N{F}_3,H_3{O}^{+}]$ and $[N{F}_3,B{F}_3]$

Q. The geometry of electron pairs around $I$ in $I{F}_5$ is:

1. Octahedral
2. Trigonal bipyramidal
3. Pentagonal planar
4. Square pyramidal

Q.

Is there any change in the hybridisation of B and N atoms as a result of the following reaction?

$B{F}_3+N{H}_3\to F_{3}B.N{H}_3$

Q. What will be the shape of $IC{l}_2^{-}$ among the following ?

1. Bent
2. Trigonal planar
3. Linear
4. Trigonal bipyramidal

Q. Which of the following molecules do not have hybridisation?

1. $As{H}_3$
2. $H_{2}S$
3. $H_{2}Se$
4. All of the above

Q. The total number of pi-bonds in $C{H}_2=CH-CH=CH-C\equiv CH$ are ______.

1. two
2. three
3. four
4. five

Q. Octahedral complexes of the type $[M{a}_2{b}_2{c}_2{]}^{n\pm }$ has:
Here $a,b,c$ are monodentate ligands

1. 2 geometrical isomers.
2. 1 enantiomeric pair.
3. no optically active geometrical isomer
4. All of the above.

Q. The correct order of increasing s character (in perencetage) in the hybrid orbitals in below molecules/ions is (assume all hybrid orbitals are exactly equivalent):

$\underset{I}{C{O}_3^{2-}};\underset{II}{Xe{F}_4};\underset{III}{I_3^{-}};\underset{IV}{NC{l}_3};\underset{V}{BeC{l}_2\left(g\right)}$

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

Q. In which of the following molecules the central atom does not have $s{p}^3$ hybridization:

1. $S{F}_4$
   
2. $B{F}_4^{-}$
   
3. $N{H}_4^{+}$
   
4. $C{H}_4$
   

Q. Explain the hybridisation of [Fe(CO)5] to have dsp3 hybridisation.

Q.

Match the complex ions given in Column I with the hybridisation and number of unpaired electrons given in Column II and assign the correct code.

$\begin{array}{cc}\text{Column~I}& \text{Column~II}\\ \left(Complexion\right)& (Hybridisation,numberofunpairedelectrons)\\ A.\left[Cr\right(H_{2}O{)}_6{]}^{3+}& 1.ds{p}^2,1\\ B.\left[Co\right(CN{)}_4{]}^{2-}& 2.s{p}^3{d}^2,5\\ C.\left[Ni\right(N{H}_3{)}_6{]}^{2+}& 1.d^{2}s{p}^3,3\\ D.[Mn{F}_6{]}^{4-}& 2.s{p}^3{d}^2,2\end{array}$

Codes

$\begin{array}{ccccc}& A& B& C& D\\ \left(a\right)& 3& 1& 4& 2\\ \left(b\right)& 4& 3& 2& 1\\ \left(c\right)& 3& 2& 4& 1\\ \left(d\right)& 4& 1& 2& 3\end{array}$

Q. Give reasons for the following :
(i) Ethyl iodide undergoes $S_{N}2$ reaction faster than ethylbromide.
(ii) $(\pm )$2 - Butanol is optically inactive.
(iii) C - X bond length in halobenzene is smaller than C - X bond length in $C{H}_3-X.$

Q. Which of the following statements are correct regarding $C{l}_{2}O$ molecule?

1. The molecule is planar
2. The shape of the molecule is bent
3. O-atom is $s{p}^3$-hybridised.
4. The molecule is non-planar.

Q. Which of the following is incorrect about trigonal hybridisation?

1. It originates from the mixing of one $s$ and two $p$ orbitals
2. $B{H}_3$ and $N{H}_3$ show this hybridisation
3. All the hybrid orbitals remain in one plane
4. Carbon containing one double bond exhibits this type of hybridisation

Q. The predicted shape of $Te{F}_4$ by VSEPR theory is

1. Octahedral
2. Tetrahedral
3. See-saw
4. Square planar

Q. In which one of the following species the central atom has the type of hybridization which is not the same as that in the other three?

1. $S{F}_4$
2. $I_3^{-}$
3. $SbC{l}_5^{2-}$
4. $PC{l}_5$

Q. Which of the following is an incorrect statement?

1. Multiple bonds are always shorter than the corresponding single bonds
2. The electron deficient molecules can act as Lewis acids
3. Canonical structures have no real existence
4. Every $A{B}_6$ type molecule has square pyramidal structure

Q. Which species among the following has bond angle of ${109.5}^o$?

1. $S{O}_2$
2. $BeC{l}_2$
3. $B{F}_3$
4. $C{H}_4$

Q. Which of the following hybridization has only one type of bond angle?

1. $s{p}^{3}d$
2. (a) and (b) above.
3. $s{p}^2$
4. $s{p}^3$

Q.

Find the sum of the interior angles of a nonagon.

Q. In allene $\left(C_3{H}_4\right),$ the type(s) of hybridisation of the carbon atoms, is (are)

1. sp and $s{p}^2$
2. $s{p}^{2}ands{p}^3$
3. sp and $s{p}^3$
4. only $s{p}^3$

Q. How many N atoms are $s{p}^2$ hybridised in the given cation?

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

Q. Which of the following has a bond angle of ${120}^{\circ }?$

1. $Cl{F}_3$
2. $NC{l}_3$
3. $BC{l}_3$
4. $N{H}_3$

Q. For which of the following hybridizations is the bond angle minimum?

1. $s{p}^2$
2. $sp$
3. $s{p}^3$
4. All of the above have same bond angle.

Q. Xenon hexafluoride reacts with silica. How many orbitals are involved in the hybridisation of the xenon compound formed?