Physics 5054 · O Level · The nuclear model of the atom

The nuclear model of the atom — practice question

A proton carries charge $q$ and has mass $m$. What are the charge and the mass of an alpha-particle?

  • Acharge $q$, mass $2m$
  • Bcharge $2q$, mass $2m$
  • Ccharge $2q$, mass $4m$
  • Dcharge $4q$, mass $2m$

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