Question detail
Which of the following is a characteristic trend observed in Group 7 elements?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
The periodic table
Question
- A. Relative molecular mass decreases down the group
- B. Relative molecular mass increases down the group
- C. Relative molecular mass remains constant down the group
- D. Relative molecular mass is unpredictable down the group
Answer
Relative molecular mass increases down the group
Explanation
The trend in relative molecular mass in Group 7 is that it increases as you go from fluorine to iodine.
Common mistake
Relative Molecular Mass Confusion
Students often confuse the trend in relative molecular mass with the trend in atomic number down Group 7.
Focus on understanding that relative molecular mass increases due to the addition of more atoms and their respective masses, while atomic number relates to the number of protons.
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