Multiple choice

1.66×10-27 kg mass

  1. electron

  2. proton

  3. neutron

  4. nucleus

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The mass of a neutron is approximately 1.67 x 10^-27 kg, which is very close to the value provided. Protons have a similar mass, but neutrons are slightly heavier and are the standard answer for this specific value in many textbooks.