Atomic radius generally increases 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 generally increases as we move down a group because there are more energy levels occupied by electrons. Atomic radius generally decreases as we move from left to right across a period because the increasing nuclear charge attracts the electrons more strongly, making the atom more compact.

Atomic Radius Generally Increases as We Move ________