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The mass of an electron is approximately 9 × 10-28 grams, while the mass of a neutron is approximately 2 × 10-24 grams. Which of the following is true?

The mass of a neutron is approximately 2,000 times the mass of an electron.

The mass of a neutron is approximately 10,000 times the mass of an electron.

The mass of a neutron is approximately 20,000 times the mass of an electron.

The mass of a neutron is approximately 1,000 times the mass of an electron.

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  • olemakpadu

    We simply divide the Mass of Neutron by Mass of electron


    =  2 × 10⁻²⁴ / (9 × 10⁻²⁸)

    =  (2/9) × 10⁻²⁴ ⁻ ⁻²⁸

    =  (2/9) × 10⁻²⁴ ⁺ ²⁸

    ≈ 0.2222... × 10²⁸ ⁻ ²⁴

    ≈ 0.2222  × 10⁴

    ≈ 2222    

    This is approximately 2000 times.

    So:

    The mass of a neutron is approximately 2,000 times the mass of an electron

    The first option. I hope this explains it.