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mary
mary asked in Education & ReferenceHomework Help · 5 years ago

HOMEWORKKK HELP?

given the mass number of a particle is 40 and the number of neutrons in the particle is 18. what is the atomic number of the particle

3 Answers

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  • Órlaith
    5 years ago
    Favorite Answer

    40 -18 =22

  • Nick
    Lv 4
    5 years ago

    18

  • Thomas
    Lv 7
    5 years ago

    When the atomic number is added to the number of neutrons, we get the mass number. In this case, the atom is argon with a mass number of 40. It's atomic number is 18. More about how to figure the mass number here:

    http://blog.science-matters.org/2011/12/08/atomic-...

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