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A particular nuclide has a mass number of 21 and contains 11 neutrons. What element is it? a. hydrogen b. neon c. sodium d. scandium
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A particular nuclide has a mass number of 21 and contains 11 neutrons. What element is it? a. hydrogen b. neon c. sodium d. scandium

User YelizavetaYR
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The answer to that is D: scandium
User Flm
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