Question detail
Using the electronic structure notation, represent the electronic structure of magnesium and explain its significance.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes
Question
Using the electronic structure notation, represent the electronic structure of magnesium and explain its significance.
Answer
The electronic structure of magnesium is represented as 2, 8, 2. This shows that magnesium has 2 electrons in its first shell, 8 in its second shell, and 2 in its outermost shell, indicating it is in Group 2 of the periodic table.
Explanation
This answer is strong as it provides the correct electronic structure for magnesium and explains its significance in terms of group classification, testing the student's ability to apply knowledge of electronic structure.
Common mistake
Misunderstanding Electronic Structure Representation
Students often represent the electronic structure of sodium as 2, 8, 1, 1 instead of 2, 8, 1.
Remember that the electronic structure should only include the number of electrons in each shell, so for sodium, it is 2 in the first shell, 8 in the second shell, and 1 in the outer shell, written as 2, 8, 1. Keep the correction anchored to Electronic structure and avoid mixing it with nearby Unit 4.1 ideas.
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