Multiple choice

Which of the following sub-atomic particles has/have 1 u relative mass and + 1 relative charge?

(i) Proton (ii) Electron (iii) Neutron

  1. Both (i) and (iii)

  2. Only (i)

  3. Both (iii) and (ii)

  4. Only (iii)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The relative mass of a proton is 1 u and the relative charge is +1.

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