Explain why a magnesium atom is smaller than atoms of both sodium and calcium.
Answer (2)
In the periodic table, there is a size trend. The trend occurs horizontally and vertically on the table.
From right to left , the atomic radius gets larger.
From** top to bottom**, the atomic radius gets larger.
The reasoning for this is the additional energy levels and electrons being added as you go from right to left or top to bottom. We can see that Magnesium is higher and more right in the periodic table than sodium and calcium. Thus, Magnesium has a smaller atomic radius than both sodium and calcium
Magnesium is smaller than sodium because it is further to the right in the periodic table, where atomic radii decrease. It is also smaller than calcium because it is located higher up, which means it has fewer electron shells. These trends in atomic size are essential to understanding the behavior of elements in the periodic table.
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