In general,atomic radii
A)decrease from left to right in a period and increase down a group.
B)increase from left to right in a period and decrease down a group.
C)do not change across a period or a group.
D)decrease from left to right and decrease down a group.
E)increase from left to right in a period and increase down a group.

Question

Quizplus · Accepted Answer

Atomic radii decrease from left to right across a period due to the increase in nuclear charge, which pulls the electrons closer to the nucleus. They increase down a group as additional electron shells are added, increasing the distance of the outermost electrons from the nucleus.

In General,atomic Radii