which of the following is the correct valence dot model for argon, ar?
which of the following is the correct valence dot model for argon, ar?
Answer
Brief Explanations:
Argon (Ar) has an atomic number of 18, so its electron configuration is 2, 8, 8. The valence shell (outermost shell) has 8 electrons. Valence dot models represent valence electrons as dots around the element symbol, with a maximum of 8 dots (4 pairs) distributed evenly on four sides (up, down, left, right). A correct model shows 8 dots, typically as four pairs around "Ar".
Answer:
The middle option (which shows eight dots, two on each side of "Ar") is the correct valence dot model for argon, as it accurately represents the 8 valence electrons in a full outer shell.