The bond energies of $F_2, Cl_2, Br_2$ and $I_2$ are $155.4, 243.6, 193.2$ and $151.2 \, kJ \, mol^{-1}$ respectively. The strongest bond is......

Both $N(SiH_3)_3$ and $NH(SiH_3)_2$ compounds have a trigonal planar skeleton. Which of the following statements is incorrect regarding these compounds?

Fill in the blanks given below:
$(i)$ The electronic configuration of noble gases is .......... .
$(ii)$ The bond formed by electrostatic attraction between a cation and an anion is called ........... .
$(iii)$ The octet rule is also known as ............ .
$(iv)$ The equilibrium distance between the centers of two bonded atoms in a molecule is called .......... .

Identify the odd-electron molecules among $NO$,$NO_2$,$CO$,and $CO_2$. Explain why.

The correct order for $O-O$ bond length in the given substances is:
$I.$ $H_2O_2$
$II.$ $O_2$
$III.$ $O_3$

Which of the following compounds do not exist?