The atomic size of atoms
A)decreases going across a period.
B)decreases going down within a group.
C)does not change going across a period.
D)increases going across a period.

Question

Quizplus · Accepted Answer

The atomic size of atoms decreases going across a period due to an increase in the number of protons and electrons, leading to a stronger attractive force between the nucleus and the electrons, making the atoms smaller.

The Atomic Size of Atoms