   # Arrange the following atoms in order of increasing ionization energy: Si, K, P, and Ca. ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 7, Problem 47GQ
Textbook Problem
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## Arrange the following atoms in order of increasing ionization energy: Si, K, P, and Ca.

Interpretation Introduction

Interpretation:

The given atoms has to be arranged in increasing order of ionization energy

Concept Introduction:

Atomic radius: The concept explain chemical element is a measured of the size of its atoms, in other words to measure the distance from the center of the nucleus to the boundary of the surrounding cloud of number of electrons.

Ionization energy (IE): The ionization energy is the required to remove an electron from an atom in the gas phase.

General formula of ionization energy= Atom in the ground state(g)Atom+(g)+eΔU=Ionizationenergy(IE)

Increase and decrease electro negativity: The less vacancy electrons an atoms has the least it will gain of electrons. Moreover the electron affinity decrease down the groups and from right to left across the periods on the periodic table, the reason is electrons are placed in a higher energy level far from the nucleus thus a decrease from its pull.

### Explanation of Solution

Analyzing for Increasing ionization energy for given statement.

Generally, the Ionization energy increases across a period and decrease down a group.

Phosphorus and Silicon are belonging to the same period, thus Phosphorus shows high Electronegative than Silicon; Potassium and Calcium are belonging to the same period, thus, calcium shows high electronegative than Potassium.  From the ionization energies for given four atoms are  K (419 kJ/mol)< Ca (590 kJ/mol)<Si&

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