Idea of Hybridisation

Q.

The hybrid orbitals are less effective in forming stable bonds than the pure atomic orbitals.

1. True

2. False

Q.

The orbitals which have unpaired electrons can only participate in hybridization.

1. False

2. True

Q.

Promotion of electron is not essential condition prior to hybridization.

1. True

2. False

Q. The hybrid orbitals are less effective in forming stable bonds than the pure atomic orbitals.

1. True
2. False

Q. Promotion of electron is not essential condition prior to hybridization.

1. False
2. True

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 of the following molecule(s) is/are planar?

1. $F_{2}C=C=C{F}_2$
2. $F_{2}B-C\equiv C-B{F}_2$
3. ${\left(Si{H}_3\right)}_{3}N$
4. $N{H}_2-N{H}_2$

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

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

Q. Which of the following statement(s) is/are correct?

1. The hybrid state of $Be$ in $BeC{l}_2$ in solid state is $s{p}^3$
2. The hybrid state of $Be$ in $BeC{l}_2$ in vapour state is $sp$
3. $Be{H}_2$ is a covalent and polymeric compound
4. The ionic character of group II halides follows the order:
   $Be{X}_2>Mg{X}_2>Ca{X}_2>SrX2$

Q. The hybridization of $PC{l}_5$ molecule in its ionic state is:

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