H2O contains single bonds between oxygen and hydrogen atoms. Oxygen atom is at center surrounded by two hydrogen atoms. Oxygen has two lone pairs
PH3 contains three single bonds between phosphorus and hydrogen atoms. Phosphorus is at center surrounded by three hydrogen atoms. Phosphorus has one lone pair
CCl4 contains one carbon atom and four chlorine atoms. Carbon forms four single bonds with chlorine atoms. Each chlorine atom has three lone pairs
H2SO4 contains sulfur atom at center surrounded by two oxygen atoms. Molecule has double bond between sulfur and oxygen. Two O-H groups form single bond with sulfur
CCl4 is a tetrahedral compound with a central carbon surrounded by 4 chlorine atoms. Carbon has 4 lone electrons, chlorine has 7 electrons. Carbon shares its 4 outer electrons with chlorine atoms
Lewis structures show molecular bonding and lone pairs of electrons. Introduced by Gilbert N. Lewis in 1916. Uses chemical symbols and lines to represent bonded atoms. Hydrogen can only form two-electron bonds