
Concept explainers
Interpretation:
The sub-shell model of boron, needs to be drawn and core and valance electrons needs to be identified.
Concept introduction:
One or more orbitals in the electron shell of an atom with the equal energy level are known as sub-shells. Sub-shells contain different shapes and are identified by their magnetic quantum number.

Answer to Problem 4E
Explanation of Solution
The
From the above configuration, it has 2 core electrons and 3 valence electrons. The valence electrons are the electrons which only take part in bonding. The core electrons do not take part in bonding.
The sub-shell model is represented as follows:
Chapter U1 Solutions
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