sp2 Hybridisation

Q.

Describe the change in hybridisation (if any) of the Al atom in the following reaction.

$AlC{l}_3+C{l}^{-}\to AlC{l}_4^{-}$

Q. The geometry of $N$ in Silyl isocyanate $\left(Si{H}_{3}NCO\right)$ and Methyl isocyanate $\left(C{H}_{3}NCO\right)$ repectively is:

1. Linear and Bent
2. Bent and Linear
3. Pyramidal and Linear
4. Linear and Linear

Q.

The compound that has the largest $\mathrm{H}–\mathrm{M}–\mathrm{H}$bond angle $(\mathrm{M}=\mathrm{N},\mathrm{O},\mathrm{S},\mathrm{C})$is:

1. ${\mathrm{CH}}_4$

2. ${\mathrm{H}}_2\mathrm{S}$

3. ${\mathrm{NH}}_3$

4. ${\mathrm{H}}_2\mathrm{O}$

Q. Which is more polar.... alkane alkene or alkyne and why??

Q. Calculate the percentage of $p-$ character of the orbitals of $‘B^{\prime }$ atom involved in bonding with $H$-atom in $B{H}_3$ molecule.

1. $66.66\%$
2. $33.33\%$
3. $50\%$
4. $75\%$

Q. The substance which contains both SP and SP3 hybridized carbon atoms is
A) ​​​​n-butene
B) isobutane
C) 2 butyne
D) 1, 3 butadiene

Q.

A molecule of water is formed when two atoms of Hydrogen combine with one atom of Oxygen

1. True
2. False

Q. Propene (I), 2-methylpropene (II), and ethene (III), each containing one carbon-carbon double bond, is separately treated with HI under the same set of conditions. The order of activity for the three alkenes should be

1. II is more reactive than both I and II
   
2. I is more reactive than II as well as III
   
3. I is more reactive than III, but less than II
   
4. III is more reactive than I which is more reactive than II
   

Q. Which of the following will have $s{p}^2$ hybridisation?

1. $C_2{H}_2$
2. $C_2{H}_4$
3. $C_2{H}_6$
4. $CHC{l}_3$

Q. The only lone pair of electrons on the central atom in $S{F}_4$ molecule is present at ___________ position.

1. Axial
2. Equatorial
3. to equatorial
4. to axial

Q.

${sp}^2$ hybrid orbitals have equal s and p character.

1. True

2. False

Q.

Which of the following is not known

1. NCl₅

2. NI₃

3. SbCl₃

4. NCl₃

Q.

A water molecule contains one atom of ------------- and two atoms of --------------------

Q.

${sp}^2$ hybrid orbitals have equal s and p character.

1. True

2. False

Q. Which element does not exhibit allotropy?

1. $C$
2. $Sn$
3. $Si$
4. $Pb$

Q.

Which of the following deviates from the rest in geometry?

1. 

2. 

3. 

4. 

Q. Explain the formation of the $B{F}_3$ molecule using hybridisation.

Q.

Hybridization of sulphur in sulphur dioxide is

1. 

2. 

3. 

4. d

Q. The electrons represented by following set of quantum numbers in decreasing order of energy is:

1. a > b > c > d
2. c > a > b >d
3. c > b > a > d
4. a > c > b > d

Q. In $(C{H}_3{)}_{3}N$ nitrogen is $s{p}^3$ hybridized whereas in $(Si{H}_3{)}_{3}N$ it is $s{p}^2$ hybridised, why?

Q. Specify the hybridization of the central atom in the following species $\{N_3^{-},NOCl,N_{2}O\}$.

1. $sp,s{p}^2,sp$
2. $sp,sp,s{p}^3$
3. $s{p}^2,sp,sp$
4. $s{p}^2,s{p}^2,sp$

Q.

Among the following compounds, the one that is polar and has the central atom with ${sp}^2$ hybridization is:

1. 

2. 

3. 

4. 

Q. Which molecule has a trigonal planar shape?

1. $S{Cl}_2$
2. $Al{Cl}_3$
3. $Be{Br}_2$
4. $N{Cl}_3$

Q. What is the hybridization of $PC{l}_5\left(s\right)$

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

Q. The hybridizations of the atomic orbitals of nitrogen in $N{O}_2^{-},N{O}_2^{+}\text{and}N{H}_4^{+}$ respectively are,

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

Q. Hybridisation of carbon atom in $C{H}_3^{+}$ is:

1. $sp$
2. $s{p}^2$
3. $s{p}^3$
4. $s{p}^3$d

Q. Which bonds are formed by a carbon atom with $s{p}^2-$hybridisation?

1. $4\pi -$bonds
2. $4\pi -$bonds and $2\sigma -$bonds
3. $1\pi -$bonds and $3\sigma -$bonds
4. $4\sigma -$bonds

Q.

Number of bond pairs and lone pairs present respectively on the central atom of xenon difluoride are

1. 4, 2

2. 4, 4

3. 6, 1

4. 2, 3

Q.

1. $C{H}_{3}CH(OH{)}_2$
2. $CC{l}_{3}COC{H}_3$
3. $C{H}_{2}C{l}_2$
4. $CC{l}_{3}CHO$

Q. The total number of $s{p}^2$ hybrid orbitals used in bonding of ethylene molecule is:

1. $5$
2. $6$
3. $7$
4. $8$