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20
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How many neutrons does an atom have if it has 86 protons and a mass number of 201?
115
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boom
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rocket
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gift
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thief
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5
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15
20
25
15
×
How many NEUTRONS are in this isotope of lithium?
5
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15
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What is the mass of an atom that has 57 protons and 64 neutrons?
121
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25
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How many neutrons does this isotope of chlorine have?
18
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heart
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rocket
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fairy
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5
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20
25
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thief
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5
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20
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25
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How many neutrons does this isotope of beryllium have?
5
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20
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Page 32:ย Two isotopes of the same element have equal numbers of __________ but a different number of _________.
protons, neutrons
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heart
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magnet
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gift
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banana
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15
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What is the mass number of this isotope?
18
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15
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How many protons does an atom have if it has 24 neutrons and a mass number of 39?
15
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15
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How many protons does this isotope of chlorine have?
17
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15
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How many protons does this isotope of beryllium have?
4
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10
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What is the mass of this isotope of chlorine?
35
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15
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How many neutrons does an atom have if it has 41 protons and a mass number of 90?
49
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20
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Page 32:ย What does the "1" represent here?
the mass
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