Covalent Bonds: electrons are shared, nonmetal to nonmetal, metalloid to nonmetal, low melting/boiling point, liquid or gas, water (H2O), methane gas (CH4), ozone (O3), carbon dioxide (CO2), Ionic Bonds: electrons are transferred, metal to nonmetal, metal gives up electron; nonmetal receives it, high melting/boiling point, solid (except Mecury), salt (NaCl), lithium chloride (LiCl2), sodium iodide (NaI), magnesium sulfide (MgS2),

Ionic vs Covalent Bonds

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