Atomic radius generally decreases as we move ________.
A)down a group and from right to left across a period
B)up a group and from left to right across a period
C)down a group and from left to right across a period
D)up a group and from right to left across a period
E)down a group; the period position has no effect

Question

Quizplus · Accepted Answer

Atomic radius decreases as we move up a group due to the decrease in electron shell levels, and from left to right across a period because of the increase in nuclear charge, pulling electrons closer.

Atomic Radius Generally Decreases as We Move ________