The trend of second ionization energies for the elements Sodium through Argon is to be predicted. The answer obtained is to be compared with Table 2 − 5 and the differences are to be explained. Concept introduction: Ionization energy is the energy evolves during the removal of valence electron from an isolated atom or ion. The second ionization energy is the energy evolves during the removal of second valence electron from the atom or ion. Valence electrons are the electrons present in outermost shell of the atom. The value of ionization energy increases if the valence electrons are fully filled or exactly half filled. Core electrons are the electrons present in the inner shell. Effective nuclear charge is the charge experienced by the outer shell electrons because of the positively charged nucleus. To determine: The trend of second ionization energy for the elements Sodium to Argon, without referring the text.

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Chapter 2, Problem 7ALQ

Interpretation Introduction

Interpretation: The trend of second ionization energies for the elements Sodium through Argon is to be predicted. The answer obtained is to be compared with Table 2−5 and the differences are to be explained.

Concept introduction: Ionization energy is the energy evolves during the removal of valence electron from an isolated atom or ion.

The second ionization energy is the energy evolves during the removal of second valence electron from the atom or ion.

Valence electrons are the electrons present in outermost shell of the atom.

The value of ionization energy increases if the valence electrons are fully filled or exactly half filled.

Core electrons are the electrons present in the inner shell.

Effective nuclear charge is the charge experienced by the outer shell electrons because of the positively charged nucleus.

To determine: The trend of second ionization energy for the elements Sodium to Argon, without referring the text.

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