
Concept explainers
(a)
Interpretation:
The electronic configuration of Aluminium atom is to be written.
Concept Introduction:
An arrangement of electrons in orbits and sub orbits is called electronic configuration.
Valence electrons are those in the outermost shell of an atom.
The neutral atom has equal number of protons and electrons. Gaining or loosing of electrons of an atom forms ion.
Negative charged ions are formed by the gaining one or more electrons and it has more electrons than protons.
Positive charged ions are formed by losing one or more electrons and it has more protons than electrons.
(b)
Interpretation:
The electronic configuration of Aluminium ion is to be written.
Concept Introduction:
An arrangement of electrons in orbits and sub orbits is called electronic configuration.
Valence electrons are those in the outermost shell of an atom.
The neutral atom has equal number of protons and electrons. Gaining or loosing of electrons of an atom forms ion.
Negative charged ions are formed by the gaining one or more electrons and it has more electrons than protons.
Positive charged ions are formed by losing one or more electrons and it has more protons than electrons.

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Chapter 4 Solutions
Study Guide with Selected Solutions for Stoker's General, Organic, and Biological Chemistry, 7th
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