Which of the following statements is true of atomic radii?
A) They decrease down a group and remain constant across a period.
B) They decrease down a group and increase across a period.
C) They increase down a group and increase across a period.
D) They increase down a group and remain constant across a period.
E) They increase down a group and decrease across a period.

Question

Quizplus · Accepted Answer

Atomic radii increase down a group due to the addition of electron shells, and decrease across a period as the effective nuclear charge pulling electrons closer increases.

Which of the Following Statements Is True of Atomic Radii