Physics, 22.09.2019 12:10 222364

For al, its atomic number is 13 and its mass number is 27. how many neutrons does it have? a. 13 b. 14 c. 26 d. 27 e. 40

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For al, its atomic number is 13 and its mass number is 27. how many neutrons does it have? a. 13 b....