Question

5 how many valence electrons are in f(fluorine)? 9 10 2 7 6 from the diagram, which of the following choices are correct for the name of red=electron, blue=neutron, green=proton red=proton, blue=neutron, green=electron red=neutron, blue=proton, green=electron

Explanation:

Step1: Recall fluorine's electron - configuration

Fluorine has an atomic number of 9. Its electron - configuration is 1s²2s²2p⁵.

Step2: Identify valence electrons

Valence electrons are in the outermost shell. For fluorine, the outermost shell is n = 2, and there are 2 + 5 = 7 electrons in the n = 2 shell.

Answer:

7

Since we can't see the diagram for question 6, we can't answer it. But for question 5, the above is the solution.