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04-01-2020
Chemistry

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The symbol Ca-40 denotes that

A. a calcium atom contains 40 protons
B. a calcium atom contains 40 electrons
C. a calcium atom contains 40 neutrons
D. a calcium atom has a mass number of 40

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theofficialkoolplug theofficialkoolplug

04-01-2020

D. A calcium atom has mass of 40

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