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The table shows information about the first four elements in group 0 of the periodic table - Edexcel - GCSE Chemistry - Question 6 - 2013 - Paper 1
Question 6
The table shows information about the first four elements in group 0 of the periodic table. | name | atomic number | density / g dm³ | |--------|---------------|-... show full transcript
Worked Solution & Example Answer:The table shows information about the first four elements in group 0 of the periodic table - Edexcel - GCSE Chemistry - Question 6 - 2013 - Paper 1
Step 1
Complete the sentence by putting a cross (✗) in the box next to your answer.
Answer
The elements in group 0 of the periodic table are D noble gases. This is because group 0 consists of elements that are all noble gases, characterized by their stable electronic configurations and low reactivity.
Step 2
On this grid draw a graph of density against atomic number for the elements helium, neon and krypton.
Answer
To plot the graph:
- On the x-axis, label atomic number from 0 to 40.
- On the y-axis, label density from 0 to 3 g dm³.
- Plot the points:
- Helium (Atomic Number 2, Density 0.15)
- Neon (Atomic Number 10, Density 1.2)
- Krypton (Atomic Number 36, Density 2.2)
- Connect the points to show the trend. The graph should demonstrate an upward trend in density as the atomic number increases.
Step 3
Use your graph to estimate the density of argon.
Answer
To estimate the density of argon (Atomic Number 18), look for its position on the graph. It should fall between the density values of neon and krypton. Based on the trend observed, the estimated density of argon is approximately 1.8 g dm³.