Valence Electrons and Ionic Compounds

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5 Terms

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Valence electrons

Electrons in outermost shell (highest n); determine bonding

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Core electrons

Inner electrons; not involved in bonding

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Octet rule

Atoms gain, lose, or share electrons to get 8 valence e⁻ (like noble gases)

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Ion formation

Metals → lose e⁻ → cations (+); nonmetals → gain e⁻ → anions (–)

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Properties of ionic compounds

Form crystal lattices’ high MP/BP, conduct when molten/dissolved; formula = neutral overall charge (e.g., Ca²⁺ + 2Cl⁻ → CaCl₂)