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7 Cards in this Set
- Front
- Back
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Valence electrons in an atom are
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Those that are held most loosely.
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An electron dot diagram shows
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An atom’s number of valence electrons
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When an atom loses or gains electrons
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It becomes an ion
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A covalent bond in which electrons are shared unequally is
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A polar bond
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How many covalent bonds can oxygen, which has 6 valence electrons, form?
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Since oxygen has 6 valence electrons, an oxygen atom could form two covalent bonds.
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Magnesium chloride is an example of an ionic compound, which means a compound composed of
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Positive and negative ions.
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An element with eight valence electrons is _____ reactive than an element with seven valence electrons because
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An element with eight valence electrons is less reactive than an element with seven valence electrons because an atom is less reactive with a full valence shell
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