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If an element has 9 protons and 10 neutrons and 9

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2)If an element has 9 protons and 10 neutrons and 9 electrons, which expression correctlyidentifies the element?A)FB)FC)KD)KE)K:
3)If an element has 15 protons and 16 neutrons and 15 electrons, what is the atomic mass ofthe element?:
4)What does the following element description actually mean?O
PHYSICAL SCIENCE PSC21215)What does the following element description actually mean?hydrogen-2
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6)The mass number of an element is ________.A) the sum of the protons and the neutrons
B) the sum of the electrons and the protonsC) the sum of the electrons and the neutronsD) the sum of the isotopesE) the number of protons7)Which of the following statements describes an isotope?
8)Which contributes more to an atom's mass: electrons or protons? Which contributes moreto an atom's size?
9)Which has more atoms: a 1-gram sample of carbon-12 or a 1-gram sample of carbon-13?

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Term
Fall
Professor
STAFF

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