S P Singh Solutions for Chapter: Chemical Bonding, Exercise 2: Intext Questions

Explain the following:

Water is a polar covalent molecule?

Elements X, Y and Z have atomic numbers 6, 9 and 12 respectively. Which one forms an anion?

Elements X, Y and Z have atomic numbers 6, 9 and 12 respectively. Which one forms a cation?

Elements X, Y and Z have atomic numbers 6, 9 and 12 respectively. State type of bond between Y and Z and give its molecular formula.

Taking ${\mathrm{MgCI}}_2$ as an electrovalent compound, ${\mathrm{CCI}}_4$ as a covalent compound, give any four differences between electrovalent and covalent compounds.

Potassium chloride is an electrovalent compound, while hydrogen chloride is a covalent compound. But, both conducts electricity in their aqueous solutions. Explain.

Draw the electron dot structure of covalent compound methane (non-polar) and HCI (polar) and give two differences between them.
 

Name two compounds that are covalent when taken pure but produce ions when dissolved in water. For each compound mentioned above give the formulae of ions formed in aqueous solution.