Writing Formulas Now that we have created a compound, lets write its formula! Na + Cl +1 Since we have one Na element and one Cl element, its formula is: NaCl This is an ionic bond. (metal + nonmetal)
Mg + Cl = ? Mg + Cl Mg + Cl Mg + Cl What about this one?
Having one lone electron makes magnesium very unstable. It needs to bond!!!! Mg + Cl Mg +
Writing Formulas Not done yet!!! We still have to write the formula! Cl Mg + Since there is one Magnesium and two Chlorine’s, the formula is: MgCl 2
Covalent Bonds Covalent bonds do NOT transfer electrons, they share them Covalent bonds exist between two nonmetals (nonmetal + nonmetal)
Covalent Bonds F + F = ? F F + = F F = F2F2 A shared bond is also represented by a dashed line F F = F
Covalent Bonds H + O = ? H + O H O What about this one?