Question

1. how many valence electrons would be shown in the electron diagram of gallium?

2
3
5
7

1. how does the number of valence electrons change as you go from top to bottom of any group on the periodic table?

it increases by 1
it stays the same
it decreases by 1
it cannot be predicted

Explanation:

Step1: Identify gallium's position

Gallium (Ga) is in group 13 of the periodic table. Elements in group 13 have 3 valence - electrons.

Step2: Recall periodic - table group property

Elements in the same group of the periodic table have the same number of valence electrons. As we move from top to bottom in a group, the number of electron shells increases, but the number of valence electrons remains the same.

Answer:

1. B. 3
2. B. It stays the same