Study Physics revision pack on Nuclear Physics for A-Level. Useful for revision, homework, and exam preparation in Zimbabwe.
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This is the Cambridge International A-Level Physics revision pack. It is a free revision pack for revision.
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1 The nucleus of one of the isotopes of nickel is represented by ${ }_{28}^{60} \mathrm{Ni}$.
Which line in the table correctly describes a neutral atom of this isotope?
| number of protons | number of neutrons | number of orbital electrons
A | 28 | 32 | 28
B | 28 | 60 | 28
C | 60 | 28 | 28
D | 60 | 32 | 32
2 A nucleus of bohrium ${ }_{\mathrm{y}}^{\mathrm{x}} \mathrm{Bh}$ decays to mendelevium ${ }_{101}^{255} \mathrm{Md}$ by a sequence of three $\alpha$-particle emissions.
\[
\begin{aligned}
\text { bohrium }{ }_{\mathrm{y}}^{\times} \mathrm{Bh} \longrightarrow | \text { dubnium }+\alpha | \begin{array}{l}
\longrightarrow \text { lawrencium }+\alpha
\longrightarrow \text { mendelevium }{ }_{101}^{255} \mathrm{Md}+\alpha
\end{array}
\end{aligned}
\]
How many neutrons are there in a nucleus of ${ }_{\mathrm{y}}^{\mathrm{x}} \mathrm{Bh}$ ?
A 267
B 261
C 160
D 154
3 Which set of radioactive emissions corresponds to the descriptions given in the table headings?
| high-speed electrons | high-speed helium nuclei | high-frequency photons
A | $\alpha$ | $\beta$ | $\gamma$
B | $\alpha$ | $\gamma$ | $\beta$
C | $\beta$ | $\alpha$ | $\gamma$
D | $\beta$ | $\gamma$ | $\alpha$
Compiled nd rearrnged by Sjit Chandra Shakya