The atomic radius of an element can be predicted based on its periodic propertie

Question

The atomic radius of an element can be predicted based on its periodic properties. Atomic radii increase going down a group in the periodic table, because successively larger valence-shell orbitals are occupied by electrons. Atomic radii generally decrease moving from left to right across a period because the effective nuclear charge increases.

Rank the following elements in order of decreasing atomic radius.

Rank from largest to smallest radius. To rank items as equivalent, overlap them.

I, Br, F, Cl

Explanation / Answer

I > Br> Cl> F

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