The graph shows a plot of N, neutron number, against Z, proton number, for 8 stable nuclei. (i) One of the nuclei is marked A on the graph. Complete the symbol for the nucleus A. (ii) Two other stable nuclei have the following properties. | Nucleus | Proton number | Neutron number | |------------|---------------|----------------| | Hafnium | 72 | 108 | | Yttrium | 39 | 50 | Plot the points on the graph that represent these two nuclei. (iii) Draw a best fit curve.

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The graph shows a plot of N, neutron number, against Z, proton number, for 8 stable nuclei - Edexcel - GCSE Physics - Question 3 - 2017 - Paper 1

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The graph shows a plot of N, neutron number, against Z, proton number, for 8 stable nuclei. (i) One of the nuclei is marked A on the graph. Complete the symbol for ... show full transcript

Worked Solution & Example Answer:The graph shows a plot of N, neutron number, against Z, proton number, for 8 stable nuclei - Edexcel - GCSE Physics - Question 3 - 2017 - Paper 1

Step 1

Complete the symbol for the nucleus A.

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Answer

The nucleus A is represented as:

$\frac{144}{60} A$

Step 2

Plot the points on the graph that represent these two nuclei.

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Answer

To plot the stable nuclei on the graph:

For Hafnium: Plot the point at (72, 108)
For Yttrium: Plot the point at (39, 50)

These points should be accurately placed with consideration for a one square tolerance.

Step 3

Draw a best fit curve.

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Answer

Draw a best fit curve that passes through or near to most points plotted for the stable nuclei. Ensure not to use straight lines; instead, create a smooth curve that represents the trend of the data.

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The graph shows a plot of N, neutron number, against Z, proton number, for 8 stable nuclei - Edexcel - GCSE Physics - Question 3 - 2017 - Paper 1

Worked Solution & Example Answer:The graph shows a plot of N, neutron number, against Z, proton number, for 8 stable nuclei - Edexcel - GCSE Physics - Question 3 - 2017 - Paper 1

Complete the symbol for the nucleus A.

Plot the points on the graph that represent these two nuclei.

Draw a best fit curve.

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