In the periodic table, the atomic radius increases going:
A) from right to left and from top to bottom
B) from left to right and from top to bottom
C) from top to bottom but horizontally in a very irregularly way
D) from left to right and from bottom to top
E) from right to left and from bottom to top
IMAT 2025 · Question 37
Q37 - Periodic properties
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The correct answer is A) from right to left and from top to bottom.
Atoms get bigger going down a group (extra shells) and going right to left across a period (fewer protons pulling on the same shell). The biggest atoms are bottom left (Cs) and the smallest top right (He, F).
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