Atoms of which of the following elements are largest?
A) Al
B) Mg
C) Na
D) None, they are all the same size.

Question

Quizplus · Accepted Answer

The size of an atom is determined by its atomic radius, which increases from right to left and from top to bottom on the periodic table. Sodium (Na) is located in the lower left corner of the periodic table, belonging to the largest group of elements (alkali metals), and has the largest atomic radius compared to aluminum (Al) and magnesium (Mg), which are located in the upper right corner of the periodic table. Therefore, the atoms of Sodium (Na) are the largest among these choices.

Atoms of Which of the Following Elements Are Largest