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
Question 3
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 symbol for nucleus A can be completed as follows:
60144A
Here, 144 represents the mass number (protons + neutrons), and 60 represents the atomic number (protons).
Step 2
Plot the points on the graph that represent these two nuclei.
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Answer
To plot the points for Hafnium and Yttrium, we will mark the following coordinates on the graph:
Hafnium: (72, 108)
Yttrium: (39, 50)
Make sure both points are plotted accurately, allowing within one square tolerance.
Step 3
Draw a best fit curve.
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Answer
After plotting the points, draw a best fit curve that passes through or near most of the points. This should not be a straight line; rather, it should smoothly connect the plotted points while accommodating variations in the data.
