Answered: In the following set of elements, rank…

World of Chemistry, 3rd edition

3rd Edition

ISBN:9781133109655

Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Chapter11: Modern Atomic Theory

Section: Chapter Questions

Problem 57A

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In the following set of elements, rank them from LOWEST first ionization energy to HIGHEST first ionization energy.

He, Ar, Mg, Al, P, Cl

Expert Solution

Step 1

definition : ionization energy is the minimum amount of energy required to remove the most loosely bound electron, the valence electron, of an isolated neutral gaseous atom or molecule.

trend of ionization energy in periodic table :

group : from top to bottom ionization energy decreases going down the group.

period : from left to right ionization energy increases across a period.

given elements :

He, Ar, Mg, Al, P, Cl

elements	first ionization energy
Helium	2370 kJ/mol
Argon	1520 kJ/mol
Magnesium	738 kJ/mol
Aluminium	577 kJ/mol
Phosphorus	1012 kJ/mol
chlorine	1251

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