An atom of an element forms an ion with the formula X^{2-} - OCR Gateway - GCSE Chemistry Combined Science - Question 9 - 2021 - Paper 1
Question 9
An atom of an element forms an ion with the formula X^{2-}.
Which Group of the Periodic Table is the element found in?
A Group 0
B Group 2
C Group 6
D Group 7
Worked Solution & Example Answer:An atom of an element forms an ion with the formula X^{2-} - OCR Gateway - GCSE Chemistry Combined Science - Question 9 - 2021 - Paper 1
Step 1
Identify the charge of the ion
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Answer
The ion has a charge of 2-, which indicates that the element has gained two electrons.
Step 2
Determine the group based on electron configuration
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Answer
Elements that form anions with a 2- charge are typically found in Group 6 of the Periodic Table, as they tend to gain two electrons to achieve a stable octet.
Step 3
Conclusion
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Answer
Thus, the element corresponding to the ion X^{2-} is found in Group 6.
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