Idea of Hybridisation

Q.

Can anyone please tell me how to calculate the hybridization?

Q.

In which of the following bond angle is maximum.

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

2. ${{\mathrm{NH}}_4}^{+}$

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

4. ${\mathrm{SCl}}_2$

Q.

What is meant by hybridisation of atomic orbitals? Describe the shapes of sp, $s{p}^2,s{p}^3$ hybrid orbitals.

Q.

The molecular geometry of ${\mathrm{SF}}_6$ is octahedral. What is the geometry of ${\mathrm{SF}}_4$(including lone pair(s) of electrons, if any)?

1. Pyramidal

2. Trigonal bipyramidal

3. Tetrahedral

4. Square planar

Q.

In the complexes $[\mathrm{Fe}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6{]}^{+3},[\mathrm{Fe}{\left(\mathrm{CN}\right)}_6{]}^{3-},[\mathrm{Fe}{\left({\mathrm{C}}_2{\mathrm{O}}_4\right)}_3{]}^{3-}\mathrm{and}{\left[{\mathrm{FeCl}}_6\right]}^{3-}$, more stability is shown by :

Q.

The correct order of increasing bond length of $\mathrm{C}-\mathrm{H},\mathrm{C}-\mathrm{O},\mathrm{C}-\mathrm{C},\mathrm{C}=\mathrm{C}$ is

1. $\mathrm{C}-\mathrm{O}<\mathrm{C}-\mathrm{H}<\mathrm{C}-\mathrm{C}<\mathrm{C}=\mathrm{C}$

2. $\mathrm{C}-\mathrm{C}<\mathrm{C}=\mathrm{C}<\mathrm{C}-\mathrm{O}<\mathrm{C}-\mathrm{H}$

3. $\mathrm{C}-\mathrm{H}<\mathrm{C}=\mathrm{C}<\mathrm{C}-\mathrm{O}<\mathrm{C}-\mathrm{C}$

4. $\mathrm{C}-\mathrm{H}<\mathrm{C}-\mathrm{O}<\mathrm{C}-\mathrm{C}<\mathrm{C}=\mathrm{C}$

Q.

What is the covalency of $\mathrm{Cl}$ in its second excited state?

Q.

The C-H bond distance is longest in:

1. ${\mathrm{C}}_2{\mathrm{H}}_2$

2. ${\mathrm{C}}_2{\mathrm{H}}_2{\mathrm{Br}}_2$

3. ${\mathrm{C}}_2{\mathrm{H}}_4$

4. ${\mathrm{C}}_2{\mathrm{H}}_6$

Q. The number of 2-centre-2-electron and 3-centre-2-electron bods in $B_2{H}_6$ respectively,

1. 2 and 4
2. 2 and 1
3. 2 and 2
4. 4 and 2

Q.

The hybridization of carbon 1, 2, 3, and 4 respectively are:

${\mathrm{C}}^1{\mathrm{H}}_2={\mathrm{C}}^2={\mathrm{C}}^3\mathrm{H}-{\mathrm{C}}^4{\mathrm{H}}_3$

1. ${\mathrm{sp}}^2,\mathrm{sp},{\mathrm{sp}}^2,{\mathrm{sp}}^3$

2. ${\mathrm{sp}}^2,{\mathrm{sp}}^2,{\mathrm{sp}}^2,{\mathrm{sp}}^3$

3. ${\mathrm{sp}}^2,{\mathrm{sp}}^3,{\mathrm{sp}}^2,{\mathrm{sp}}^3$

4. ${\mathrm{sp}}^3,\mathrm{sp},{\mathrm{sp}}^3,{\mathrm{sp}}^3$

Q.

Explain the structure of carbon dioxide.

Q.

The c-c bond length in propene is little shorter $\left(1.49\stackrel{\circ }{A}\right)$ then the c-c bond length $\left(1.54\stackrel{\circ }{A}\right)$ is ethane. This is due to

1. +I effect of CH₃ group

2. Mesomeric effect

3. Electronic effect

4. Hyperconjugation effect

Q.

Does a particular p-orbital orientation (px, py, pz) correspond to a particular value of m (magnetic quantum number 0, +1, -1)?

Q.

Define pure orbitals.

Q.

What is the hybridization of Hydrogen Peroxide?

Q. Answer the given statements as True (T) or false (F).

1. The orbitals which have equivalent energy can take part in hybridisation.
2. The number of hybrid orbitals is equal to the number of atomic orbitals mixed.
3. Hybridisation is a hypothetical concept which includes the mixing of electrons.
4. A hybrid orbital only forms $\sigma$ bond.

1. TTTT
2. TTFF
3. TTFT
4. TTTF

Q. Which is a correct statement?
As the s-character of a hybrid orbital decreases,
(I) The bond angle decreases.
(II) The bond strength increases.
(III) The bond length increases.
(IV) The size of orbitals increases.

1. (I), (III) and (IV)
2. All are correct
3. (I) and (II)
4. (II), (III) and (IV)

Q.

Which is more stable ${\mathrm{sp}}^2\mathrm{or}{\mathrm{sp}}^3$?

Q. Why sp2 hybridised carbon is more electronegative than sp3 hybridised carbon?

Q.

Hybridisation involves:

1. Separation of atomic orbitals

2. Overlapping of atomic orbitals

3. Mixing of atomic orbitals of atom

4. All of these

Q.

Ratio of the radii of two Bohr orbits of H-atom is 4:1.what would be the nomenclature.options are below

1. K & L

2. L & K

3. N & L

4. 2&3 BOTH

The answer given is 4th option

Bt I think it may be 2nd option.

Q. In $CHC{l}_3$, carbon is $s{p}^3$ hybridised. What is the number of hybrid orbitals of carbon that have exactly 25% $‘s^{\prime }$ character in molecule?

Q. Which among the following compounds has both $s{p}^2$ and $s{p}^3$ hybridizations?

1. Propene
2. Propyne
3. Propane
4. Allene (Propa-1, 2-diene)

Q.

The geometry of ${\mathrm{H}}_2\mathrm{S}$ and its dipole moment are______.

Q. Which of the following is true about hybridisation?

1. Orbitals undergoes hybridisation should have similar energy
2. Number of hybridised orbital formed is equal to the number of atomic orbitals undergoing hybridisation
3. Hybridised orbitals always form sigma bonds
4. All the above

Q. What is the hybridization of ${\left[CO\right(N{H}_3{)}_6]}^{3+}$?

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

Q.

How many years would it take to spend Avogadro number of rupees @ 10 lakh rupees per second

Q.

In the crystal of CsCl, the nearest neighbours of each Cs ion are

[MP PET 1993]

1. Eight Cs ions

2. Six chloride ions

3. Eight chloride ions

4. Six Cs ions

Q. Which of the following orbitals can undergo hybridisation?

1. $3pand4s$
2. $3sand4s$
3. $2pand4d$
4. $3sand3d$

Q. Which among the given molecule does not contain a central atom with expanded octet? (1) PF5 (2)SF5