Question

1 racha de semanas nivel 4 ar 4 of 4

Explanation:

To determine the number of valence electrons in argon (Ar), we analyze its electron configuration:

Step 1: Identify electron shells

Argon has 3 electron shells. The first shell holds 2 electrons, the second holds 8, and the third (valence shell) holds 8.

Step 2: Define valence electrons

Valence electrons are in the outermost (valence) shell. For Ar, the outermost shell (3rd) has 8 electrons.

Answer:

Argon has 8 valence electrons.