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The elements in group 7 of the periodic table are known as the halogens - Edexcel - GCSE Chemistry: Combined Science - Question 4 - 2022 - Paper 1
Question 4
The elements in group 7 of the periodic table are known as the halogens. (a) Name the halogen that is in period 4 of the periodic table. (b) Explain why chlorine ... show full transcript
Worked Solution & Example Answer:The elements in group 7 of the periodic table are known as the halogens - Edexcel - GCSE Chemistry: Combined Science - Question 4 - 2022 - Paper 1
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Explain why chlorine is more reactive than iodine.
Answer
Chlorine is more reactive than iodine due to its atomic structure. Chlorine has fewer electron shells compared to iodine, which means its outer shell electrons are closer to the nucleus. This results in a stronger electrostatic attraction between the outer electrons and the nucleus. Consequently, chlorine can gain an electron more easily than iodine, making it more reactive. Additionally, iodine has more electron shells, which increases electron shielding, reducing the effective nuclear charge felt by the outer electrons.
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