Which statement describes a periodic trend of atomic radius?
O
A. It tends to decrease from left to right across a period.
O
B. It remains the same within a period.
O
c. It remains the same within a group.
O
D. It tends to decrease from top to bottom of a group.

Explanation: This trend is caused by the increase number of protons in an atoms nucleus when moving across a period. The protons pull the electrons towards the nucleus causing the atomic radii to shrink and gets smaller or also called as electron shielding.

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Which statement describes a periodic trend of atomic radius? O A. It tends to decrease from left to right across a period. O B. It remains the same within a period. O c. It remains the same within a group. O D. It tends to decrease from top to bottom of a group.

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Which statement describes a periodic trend of atomic radius?
O
A. It tends to decrease from left to right across a period.
O
B. It remains the same within a period.
O
c. It remains the same within a group.
O
D. It tends to decrease from top to bottom of a group.