This question is about different Groups in the Periodic Table - OCR Gateway - GCSE Chemistry: Combined Science - Question 12 - 2020 - Paper 1
Question 12
This question is about different Groups in the Periodic Table.
(a) The elements in Group 7 have different physical properties at room temperature.
Draw a line to c... show full transcript
Worked Solution & Example Answer:This question is about different Groups in the Periodic Table - OCR Gateway - GCSE Chemistry: Combined Science - Question 12 - 2020 - Paper 1
Step 1
Draw a line to connect each Group 7 element with its correct description.
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Answer
Fluorine - Green gas
Chlorine - Grey-black solid
Bromine - Orange-brown liquid
Iodine - Pale-yellow gas
Step 2
The most reactive element in Group 7 is _____________.
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Answer
fluorine
Step 3
This is because its atoms gain _____________ more easily than atoms of the other elements.
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Answer
electrons
Step 4
State why the elements in Group 7 have similar chemical properties.
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Answer
The elements in Group 7 have similar chemical properties because they all have the same number of valence electrons, which is seven. This similar electron configuration results in similar reactivity and bonding characteristics among these elements.
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