Number of valence electrons in a pentavalent impurity are March 13, 2023 by admin Number of valence electrons in a pentavalent impurity are 3 4 5 6 Correct answer: 3. 5 Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on WhatsApp (Opens in new window)