Chapter 12, Problem 12.39QP

Interpretation Introduction

Interpretation:

• The property of metals being good conductors of heat and electricity has to be explained.
• The decrease in electrical conductivity of metals with increase in temperature has to be reasoned.

Concept Introduction:

In the periodic classification of elements, metals are located in the group $IA,IIA,IBtoVIIIB.$  Group $IAandIIA$elements are known as Alkali metals and alkaline earth metals respectively. They constitute s-block elements. Group $IBtoVIIIB$ elements constitute d-block elements.

Metals are known to be good conductors of heat and electricity. Metals exist as solids called Metallic solids.  Metallic solid is a typical crystalline solid where metal exist as metal ions by losing their valence electrons.  Those valence electrons are termed as free electrons which are delocalized throughout the metal lattice.

Figure 1

The metal ions are arranged in a well-defined, regular, geometric pattern.  The free electrons are present more in the metallic lattice that they are often referred as pool of electrons.