Chapter 8, Problem 8.122QP

Interpretation Introduction

Interpretation:

Melting point and boiling point of bromine has to be determined and compared with the actual values.

Concept Introduction:

Elements with same valence electrons are placed in the same group in periodic table.

Chemical properties of an element can be determined by the number of electrons in the subshell containing the outermost electrons.

The elements with same number of valence electrons have physical and chemical properties.

Group 7A in the periodic table are known as halogens and it has 8 valence electrons and the outer electronic configuration is ${\text{ns}}^{\text{2}}{\text{np}}^5$.

Boiling point: It is the temperature at which liquid converts to vapor.

Melting point: It is the temperature at which solid converts to liquid.