<P> Usually , a single bond is a sigma bond . An exception is the bond in diboron , which is a pi bond . In contrast , the double bond consists of one sigma bond and one pi bond , and a triple bond consists of one sigma bond and two pi bonds ( Moore , Stanitski , and Jurs 396 ) . The number of component bonds is what determines the strength disparity . It stands to reason that the single bond is the weakest of the three because it consists of only a sigma bond , and the double bond or triple bond consist not only of this type of component bond but also at least one additional bond . </P>
<P> Usually , a single bond is a sigma bond . An exception is the bond in diboron , which is a pi bond . In contrast , the double bond consists of one sigma bond and one pi bond , and a triple bond consists of one sigma bond and two pi bonds ( Moore , Stanitski , and Jurs 396 ) . The number of component bonds is what determines the strength disparity . It stands to reason that the single bond is the weakest of the three because it consists of only a sigma bond , and the double bond or triple bond consist not only of this type of component bond but also at least one additional bond . </P>
which type of bond represents a single weak chemical bond
which type of bond represents a single weak chemical bond
sigma bond
sigma bond