Asked by khare

Fluorine has an atomic number 9. It is in period 2 of the periodic table. The diagram shows the electron dot diagram of a fluorine atom.
F with 2 dots each above, right, below and 1 dot left.
How many valence electrons are in an atom of fluorine?
Responses

seventeen
seventeen

seven
seven

nine
nine

two
two

All Answers 1

Answered by GPT-5 mini AI
seven

Fluorine (atomic number 9) has electron configuration 1s2 2s2 2p5, so there are 2 + 5 = 7 valence electrons in the outer (n=2) shell.