Physics 9702 · AS & A Level · SI units

SI units — practice question

By altering the number of electrons in a neutral atom of the plutonium isotope, $^{{239}}_{{94}}\text{Pu}$, a charged atom (ion) W is formed. W carries a net charge of $+1.6 \times 10^{-19}\text{ C}$. What are the numbers of protons, neutrons and electrons in W?

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