Name: Period: Lewis Dot Structures Practice Worksheet Determine the number of valence electrons for each element and draw the dot structures for the following molecules: 1) PBr3 P =___________ Br=_________ x 3 Total electrons=____________ Structure: 2) NH3 N=______________ H= _____________ x 3 Total Electrons=_____________ Structure: 3) CH4 C=________________ H=______________ x 4 Total Electrons=_____________ Structure: Need help with your chemistry? Visit www.chemfiesta.com! 4) SO2 S=_______________ O=________________x 2 Total Electrons=_______________ Structure: 5) CCl4 C=_______________ Cl=_______________ x 4 Total Electrons=________________ Structure: 6) H2O H=_______________x 2 O=_________________ Total Electrons=_________________ Structure: Need help with your chemistry? Visit www.chemfiesta.com!