Question detail
What is the trend in relative molecular mass as you move down Group 7 of the periodic table?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
The periodic table
Question
What is the trend in relative molecular mass as you move down Group 7 of the periodic table?
Answer
As you move down Group 7, the relative molecular mass of the halogens increases. This is due to the addition of more protons and neutrons in the nuclei of the atoms as you progress down the group.
Explanation
This answer is strong because it directly addresses the trend in relative molecular mass and provides a clear reason for the trend based on atomic structure. The question tests the student's understanding of how atomic composition affects molecular mass in a specific group of the periodic table.
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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