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06-04-2021
Chemistry

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Please help I'm not sure what the answers are

Please help Im not sure what the answers are class=

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fatimarashid329 fatimarashid329

06-04-2021

Answer:

An element's mass number (A) is the sum of the number of protons and the number of neutrons. The small contribution of mass from electrons is disregarded in calculating the mass number.

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