Physics 0625 · IGCSE · The nuclear model of the atom

The nuclear model of the atom — practice question

The hydrogen isotopes are hydrogen-2 ($^{2}_{1}\text{H}$) and hydrogen-3 ($^{3}_{1}\text{H}$).
(a(i))[1]

State one way in which their nuclei are alike.

(a(ii))[2]

Describe how a hydrogen-3 nucleus is different from a hydrogen-2 nucleus.

(b(i))[3]

Explain why an extremely high temperature is required to force these two nuclei together.

(b(ii))[2]

Using nuclide notation, finish the equation for this reaction. $^{2}_{1}\text{H} + ^{3}_{1}\text{H} \rightarrow$

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: both have one proton / the same number of protons

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