Question

matter interactions matter interactions unit test
which element has the same number of valence electrons as bromine (br)?
(1 point)
selenium (se)
chlorine (cl)
krypton (kr)
potassium (k)

Explanation:

Valence electrons are the electrons in the outermost shell of an atom. Elements in the same group (vertical column) of the periodic table have the same number of valence electrons. Bromine (Br) is in group 17 (halogens). Chlorine (Cl) is also in group 17. Selenium (Se) is in group 16, krypton (Kr) is in group 18, and potassium (K) is in group 1.

Answer:

chlorine (Cl)