Question detail
Which element in Group 7 has the highest relative molecular mass?
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. Fluorine
- B. Chlorine
- C. Bromine
- D. Iodine
Answer
Iodine
Explanation
Iodine has the highest relative molecular mass among the Group 7 elements due to having more protons and neutrons.
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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