What is the mass of a neutron?
Correct answer C. 1.67 × 10⁻²⁷ kg
Explanation
A neutron has a mass of about 1.675 × 10⁻²⁷ kg, slightly more than a proton and roughly 1840 times the mass of an electron (9.1 × 10⁻³¹ kg).
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