Question detail
How does the arrangement of elements in the same group of the periodic table relate to their outer-shell electron configuration?
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
How does the arrangement of elements in the same group of the periodic table relate to their outer-shell electron configuration?
Answer
The arrangement of elements in the same group reflects that they have similar outer-shell electron configurations. For instance, all elements in Group 17 have seven outer-shell electrons, which leads to similar chemical properties such as their tendency to gain one electron to achieve a full outer shell.
Explanation
This answer is strong as it connects the concept of electron configuration to the periodic table's grouping, showing the student understands the underlying principles of chemical behavior. The question assesses the student's ability to apply knowledge of electron arrangement to explain group characteristics.
Common mistake
Outer-shell Electrons Confusion
Students often think that elements in the same group have the same total number of electrons instead of the same number of outer-shell electrons.
Focus on understanding that only the outer-shell electrons determine the group properties, not the total electron count.
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