Chapter 18, Problem 8E

Interpretation Introduction

Interpretation: The atomic number of the next alkali metal needs to be determined that must be discovered and the physical properties of that element need to be compared with other alkali metals.

Concept Introduction: In the Long form of periodic table, the non-metals are mainly placed at the right side of the periodic table that is called as p-block elements. Metals make the 75 % part of the periodic table. Metals are electropositive elements and mainly form ionic compound whereas non-metals are electronegative elements and can form either covalent or ionic compounds.