Embibe Experts Solutions for Exercise 3: Assignment

Number of carbon atoms present in ${\mathrm{sp}}^2$ hybrid state of given molecule?

In a regular trigonal bipyramidal ${\mathrm{MX}}_5$, the number of $\mathrm{X}-\mathrm{M}-\mathrm{X}$ bonds at $180°$ is

Arrange the following species in increasing order of bond angle ${\mathrm{NF}}_3, {\mathrm{NCl}}_3, {\mathrm{NBr}}_3, {\mathrm{NI}}_3$

Which of the following is correct representation of dipole moment of ${\mathrm{NH}}_3$ molecule?

The ground state electronic configuration of valence shell electrons in nitrogen molecule $\left({\mathrm{N}}_2\right)$ is written
as $\mathrm{kk}, \mathrm{\sigma }2{\mathrm{s}}^2, {\mathrm{\sigma }}^{*}2{\mathrm{s}}^2, \left[\begin{array}{l}\mathrm{\pi }2{\mathrm{p}}_{\mathrm{y}}^2\\ \mathrm{\pi }2{\mathrm{p}}_{\mathrm{z}}^2\end{array}\right], \mathrm{\sigma }2{\mathrm{p}}_{\mathrm{x}}^2$. Hence the bond order in nitrogen molecule is

Which of the following statements are correct?
I. Bond order of $\mathrm{NO}$ is $2.5$
II. Bond order of ${\mathrm{NO}}^{+}$ is $3.0$ 
III. Bond order of ${\mathrm{O}}_2$ is $1.5$
IV. Bond order of $\mathrm{CO}$ is $3.0$

How many bonds are formed by each oxygen atom in ice?

Which of the following pair consists of only paramagnetic species?