Which element has a larger atomic radius than aluminum (Al)?The Periodic TableA.Sodium (Na)B.Nitrogen (N)C.Silicon (Si)D.Boron (B)
Question
Which element has a larger atomic radius than aluminum (Al)?
The Periodic Table
A. Sodium (Na)
B. Nitrogen (N)
C. Silicon (Si)
D. Boron (B)
Solution
The atomic radius generally increases as you move down and to the left on the periodic table. Therefore, we can eliminate options B. Nitrogen (N) and D. Boron (B) because they are to the right of Aluminum (Al). Between A. Sodium (Na) and C. Silicon (Si), Sodium (Na) is to the left of Aluminum (Al) but Silicon (Si) is directly below Aluminum (Al) in the same group.
In the periodic table, the atomic radius tends to increase more significantly as you move down a group rather than across a period. This is because as you move down a group, new energy levels are being added, increasing the distance between the nucleus and the outermost electrons.
Therefore, the element with a larger atomic radius than Aluminum (Al) is C. Silicon (Si).
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