Which of the following correctly describes the elements in the same group of the periodic table?(1 point)

Question

Responses

The atomic radius of these elements does not change as one moves down the group.
The atomic radius of these elements does not change as one moves down the group.

The number of electrons in their valence shell increases as one moves down the group.
The number of electrons in their valence shell increases as one moves down the group.

The number of electrons in their valence shell does not change as one moves down the group.
The number of electrons in their valence shell does not change as one moves down the group.

The atomic radius of these elements decreases as one moves down the group.

Answer 1

The correct response is:

The number of electrons in their valence shell does not change as one moves down the group.

Elements in the same group of the periodic table have the same number of valence electrons, which is why their chemical properties are similar. As you move down a group, while the number of electron shells increases (and thus the overall size or atomic radius typically increases), the number of valence electrons remains the same.