Which element has fewer than four dots in its electron dot diagrams?

Question

arsenic (As)
sulfur (S)
krypton (Kr)
gallium (Ga)

Answer 1

To determine which element has fewer than four dots in its electron dot diagram (Lewis dot structure), we need to look at the number of valence electrons for each element:

1. Arsenic (As) - has 5 valence electrons (5 dots).
2. Sulfur (S) - has 6 valence electrons (6 dots).
3. Krypton (Kr) - has 8 valence electrons (8 dots).
4. Gallium (Ga) - has 3 valence electrons (3 dots).

From this, we can see that gallium (Ga) has fewer than four dots in its electron dot diagram, with only 3 dots.

So, the answer is gallium (Ga).