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How many valence electrons does a chlorine (Cl) atom have?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
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Which part of the atom is responsible for forming chemical bonds?
A
Core (inner-shell) electrons
B
Neutrons in the nucleus
C
Protons in the nucleus
D
Valence electrons
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Understand that chemical bonds form due to interactions between electrons of different atoms.
Recall that electrons in an atom are arranged in shells or energy levels around the nucleus.
Identify that the electrons in the outermost shell, called valence electrons, are the ones involved in bonding.
Recognize that core (inner-shell) electrons are held tightly by the nucleus and generally do not participate in bonding.
Note that protons and neutrons are located in the nucleus and do not directly participate in chemical bond formation.
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