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Look at the table - OCR Gateway - GCSE Chemistry: Combined Science - Question 3 - 2018 - Paper 1
Question 3
Look at the table. | State at room temperature | Electronic structure | |--------------------------|----------------------| | A | Gas ... show full transcript
Worked Solution & Example Answer:Look at the table - OCR Gateway - GCSE Chemistry: Combined Science - Question 3 - 2018 - Paper 1
Step 1
Which row in the table has the correct information about chlorine?
Answer
Chlorine, at room temperature, is a gas with an electronic structure of 2.7. Therefore, the correct row in the table is row B, which indicates that chlorine has an electronic structure of 2.8.7. In reality, chlorine has 7 valence electrons, which can be noted with the correct electronic configuration being 2.8.7. Thus, the answer is B.