Valence Electrons. Electrons Electrons are found in orbitals within energy levels The regions in an...

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Valence Electrons

Transcript of Valence Electrons. Electrons Electrons are found in orbitals within energy levels The regions in an...

Page 1: Valence Electrons. Electrons Electrons are found in orbitals within energy levels The regions in an atom where electrons are found are called orbitals.

Valence Electrons

Page 2: Valence Electrons. Electrons Electrons are found in orbitals within energy levels The regions in an atom where electrons are found are called orbitals.

Electrons

• Electrons are found in orbitals within energy levels

• The regions in an atom where electrons are found are called orbitals

• Electrons usually occupy the lowest energy levels available in an atom

Page 3: Valence Electrons. Electrons Electrons are found in orbitals within energy levels The regions in an atom where electrons are found are called orbitals.

Valence electrons

• An electron in the outermost energy level of an atom is called a valence electron

• Ex.– The single electron of a hydrogen atom is a

valence electron because it is the only electron the atom has

– In a neon atom, its valence electrons are the eight electrons that are in the outermost energy level

Page 4: Valence Electrons. Electrons Electrons are found in orbitals within energy levels The regions in an atom where electrons are found are called orbitals.

Valence electrons

Page 5: Valence Electrons. Electrons Electrons are found in orbitals within energy levels The regions in an atom where electrons are found are called orbitals.

Chemical Reactivity

• The chemical reactivity of an atom is mainly determined by valence electrons

• Atoms with a complete (full) valence shell are not reactive

• Atoms with one or two valence electrons are highly reactive

• Orbitals that are empty, half-full, or full are more stable

Page 6: Valence Electrons. Electrons Electrons are found in orbitals within energy levels The regions in an atom where electrons are found are called orbitals.

Periodic Table