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Chapter 10: Problem 47

Where are the valence electrons found in an atom, and why are these particular electrons most important to the chemical properties of the atom?

Short Answer

Expert verified
Valence electrons are found in the outermost electron shell, or energy level, of an atom and are responsible for the chemical properties of the atom, as they determine how the atom can interact with other atoms through chemical bonding. These electrons are crucial because they dictate how an atom can form chemical bonds with other atoms in order to achieve a stable electron configuration, resulting in the formation of molecules or compounds.

Step by step solution

01

Definition of Valence Electrons

Valence electrons are the outermost electrons in an atom's electron shell. They are responsible for the chemical properties of the atom, as they determine how the atom can interact with other atoms through chemical bonding.
02

Location of Valence Electrons within an Atom

Valence electrons are located in the outermost electron shell, or energy level, of an atom. An atom's electron configuration can be used to identify the location and number of valence electrons. For example, the electron configuration of a carbon atom is 1s虏 2s虏 2p虏. The valence electrons are found in the second energy level (2s虏 and 2p虏), which is the outermost shell.
03

Importance of Valence Electrons to Chemical Properties

Valence electrons are essential to an atom's chemical properties because they dictate how an atom can form chemical bonds with other atoms. Atoms strive to achieve a stable electron configuration by gaining, losing, or sharing valence electrons. This process results in the formation of chemical bonds and the formation of molecules or compounds. For example, when a sodium atom (Na) with one valence electron reacts with a chlorine atom (Cl) with seven valence electrons, the sodium atom transfers its valence electron to the chlorine atom. This transfer results in both atoms achieving a stable electron configuration, and a chemical bond is formed between them, producing a sodium chloride (NaCl) compound.

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