Question

exit ticket 22 (module 4 - lesson 8)
question 1. which of the following elements have 5 valence electrons? (select all that apply)
fluorine (f)
carbon (c)
nitrogen (n)
sulfur (s)
phosphorus (p)

Explanation:

Valence electrons are determined by the group number in the periodic table. Elements in group 15 (or group VA in the old - style numbering) have 5 valence electrons. Nitrogen (N) is in group 15, and phosphorus (P) is also in group 15.
Fluorine (F) is in group 17 (7 valence electrons), carbon (C) is in group 14 (4 valence electrons), and sulfur (S) is in group 16 (6 valence electrons).

Answer:

Nitrogen (N), Phosphorus (P)