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How many valence electrons does an atom with five total electrons have?
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2. Essential Chemistry for Biology
Parts of an Atom
Indietro2. Essential Chemistry for Biology
Parts of an Atom
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How many electrons does an Oxygen atom need to fulfill the octet rule by filling its valence shell?
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A proton ___________:
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What is TRUE about carbon-13 and carbon-14?
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The isotope Carbon-14 has a half-life of 5,730 years. How many years must pass for a sample of Carbon-14 to break down to ¼ of its original amount?
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The average oxygen atom has a mass number of 16 and an atomic number of 8. This means that the number of neutrons in this oxygen atom is:
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The atomic number of nitrogen is 7. Nitrogen-15 has a greater mass number than nitrogen-14 because the atomic nucleus of nitrogen-15 contains ________.
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How are Carbon-13 and Nitrogen-15 respectively different from the more abundant isotopes Carbon-12 and Nitrogen-14? Carbon-13 and Nitrogen-15 _______________:
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A neon atom (Ne) is unreactive for which of the following reasons?
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Which of the following is true about electron energy shells?
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