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This quiz contains 12 questions from a mix of 1 subtopics.
Isotopes have the same number of but a different number of .
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Isotopes have the same number but a different number.
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Which statement correctly compares the reactivity of 24Mg with 25Mg?
24Mg is more reactive than 25Mg
24Mg is less reactive than 25Mg
24Mg has the same reactivity as 25Mg
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What is the structure of a 2+ ion of the magnesium-25 isotope?
12 protons, 13 neutrons and 14 electrons
12 protons, 13 neutrons and 10 electrons
12 protons, 12 neutrons and 10 electrons
13 protons, 12 neutrons and 10 electrons
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Will a sample of copper containing 63Cu atoms or 65Cu atoms have a higher density?
63Cu
65Cu
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Define the term relative isotopic mass.
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Define the term relative atomic mass.
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What factors does relative atomic mass take into account?
(Select all that apply).
adundance of each istope
relative isotopic mass of each isotope
electronic configuration of each isotope
number of neutrons in each isotope
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Copper has 2 stable isotopes, 63Cu and 65Cu. The relative abundance of 63Cu is 69.2% and the relative abundance of 65Cu is 30.8%.
Predict, without calculation, the most plausible answer for the relative atomic mass of copper.
63.6
64.0
64.4
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Lithium naturally exists as two isotopes: lithium-6, with an abundance of 7.6%, and lithium-7, with an abundance of 92.4%.
Calculate the relative atomic mass of lithium.
6.50
6.08
6.92
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Boron naturally exists as two isotopes: boron-10, with an abundance of 19.7%, and boron-11, with an abundance of 80.3%.
Calculate the relative atomic mass of boron.
10.5
10.2
10.8
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Magnesium naturally exists as three isotopes: magnesium-24, with an abundance of 79.0%, magnesium-25 with an abundance of 10.0%, and magnesium-26 with an abundance of 11.0%.
Calculate the relative atomic mass of magnesium to 1 decimal place.
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