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    Home » Question 2.3: How many neutrons and protons are there in the following nuclei?

    Question 2.3: How many neutrons and protons are there in the following nuclei?

    Dr. Vikas JasrotiaBy Dr. Vikas JasrotiaSeptember 8, 2023Updated:September 9, 2023No Comments
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    Question 2.3: How many neutrons and protons are there in the following nuclei?
    136C, 168O, 2412Mg, 5626Fe, 8838Sr
    Ans 2.3: 136C
    Atomic mass = 13
    Atomic number = Number of protons = 6
    Number of neutrons = Atomic Mass – Atomic Number
    ∴ Number of neutrons = 13 – 6 = 7

    168O
    Atomic mass = 16
    Atomic number = 8
    Number of protons = 8
    Number of neutrons = Atomic Mass – Atomic Number
    ∴ Number of neutrons = 16 – 8 = 8

    2412Mg
    Atomic mass = 24
    Atomic number = Number of protons = 12
    Number of neutrons = Atomic Mass – Atomic Number
    ∴ Number of neutrons = 24 – 12 = 12

    5626Fe
    Atomic mass = 56
    Atomic number = Number of protons = 26
    Number of neutrons = Atomic Mass – Atomic Number
    ∴ Number of neutrons = 56 – 26 = 30

    8838Sr
    Atomic mass = 88
    Atomic number = Number of protons = 38
    Number of neutrons = Atomic Mass – Atomic Number
    ∴ Number of neutrons = 88 – 38 = 50

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