Subject Experts Solutions for Chapter: Chemical Bonding, Exercise 1: Practice Exercise

Three elements $\mathrm{Na}, \mathrm{S}$ and $\mathrm{O}$ combine to form a compound ${\mathrm{Na}}_2{\mathrm{SO}}_3.$ What is the valency of $\mathrm{S}$ in this compound?

The bond which is present between water molecules is-

The number of valence electrons in the ${\mathrm{O}}^{2-}$ ion is-

Which one of the following is the correct electronic configuration of chlorine?

The high heat of vaporisation of water is mainly a result of-

Which of the following element combinations will form ionic compounds?

$1. \mathrm{Ca} (\mathrm{Z}=20)$ and $\mathrm{Ti} (\mathrm{Z}=22)$

$2. \mathrm{Si} (\mathrm{Z}=14)$ and $Br (\mathrm{Z}=35)$

$3. Mg (\mathrm{Z}=12)$ and $\mathrm{Cl} (\mathrm{Z}=17)$

Select the correct answer using the codes given below.

Which one among the following does not wet the walls of the glass vessel in which it is kept?

Which one of the following statement is correct?