Chapter 6, Problem 59A

Interpretation Introduction

Interpretation:

The trend given in a series of equations is to be identified.

Concept Introduction : The periodic table is a columnar structure that organizes different elements into groups based on how they behave. The elements in the periodic table of today are ordered according to the periodic law. The elements are organized in the modern periodic table in increasing order of their atomic number. Periodic trends are patterns found in the periodic table that show several facets of a particular element.

Answer to Problem 59A

The first ionization energy increases across the period.

Explanation of Solution

The first ionization energy is the energy needed for the extraction of the outermost electron from the neutral gaseous atom. The given equations represent equations for ionization. The ionization energy increases. Li, O, F, and Ne are present in the same period. Lithium is present in the extreme left of the periodic table while Ne is present in the extreme right.

The ionization energy increases across the period. So, lithium should have the smallest, and Ne should have the largest ionization energy. Thus, the given trend is “The first ionization energy increases across the period”