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Figure 6 shows some information about the group 1 metals - Edexcel - GCSE Chemistry - Question 3 - 2023 - Paper 2
Question 3
Figure 6 shows some information about the group 1 metals. | group 1 metal | atomic number | relative atomic mass | |---------------|---------------|----------------... show full transcript
Worked Solution & Example Answer:Figure 6 shows some information about the group 1 metals - Edexcel - GCSE Chemistry - Question 3 - 2023 - Paper 2
Step 1
Explain, in terms of their electronic configurations, why these metals are placed in group 1 of the periodic table.
Answer
Group 1 metals each have one electron in their outermost shell. This single electron determines their chemical properties and reactivity, which is why they are placed in the same group of the periodic table. As we move down the group from lithium to caesium, the atomic number increases and so does the number of electron shells. However, the characteristic of having one outer electron remains constant.
Step 2