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.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The symbol for nucleus A can be represented as:
60144A
Here, 144 is the mass number (total number of protons and neutrons), and 60 is the atomic number (number of protons).
Step 2
Plot the points on the graph that represent Hafnium and Yttrium.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
To plot the points for Hafnium and Yttrium, locate their coordinates on the graph:
Hafnium (72, 108): Plot a point at Z = 72 on the x-axis and N = 108 on the y-axis.
Yttrium (39, 50): Plot a point at Z = 39 on the x-axis and N = 50 on the y-axis.
Ensure the points are marked within a square tolerance of the graph.
Step 3
Draw a best fit curve.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Draw a smooth curve that passes through or near the most points plotted on the graph. Avoid straight lines or shaky connections between points. Make sure to allow for correction in pencil lines.
