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02-12-2020
Chemistry

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Please help !!!

The atomic number of sodium is 11. How many neutrons does an isotope with a mass number of 22 have ?

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02-12-2020

Answer: 12 neutrons
Explanation: The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass). Sodium has a mass number of 23amu. Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.

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ameliad2 ameliad2

05-10-2021

Answer:

11

Explanation:

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