To know the no. of sigma and pi" bonds" σandπ bonds the Lewis structure of the compound is to be drawn showing all single,double and triple bonds. In this structure
" Each single bond is 1"sigma" bond" Each single bond is 1σ bond
" Each double bond is 1"sigma and 1 pi" bond" Each double bond is 1σand1π bond
" Each triple bond is 1"sigma and 2 pi" bond" Each triple bond is 1σand2π bond
Using the above information we get can the no. of sigma and pi"bonds" σandπbonds in the given structure.
4" single bonds"->4sigma " bonds"4 single bonds→4σ bonds
1" double bond"->1sigma and 1pi " bonds"1 double bond→1σand1π bonds
4" triple bond"->4sigma and 8pi " bonds"4 triple bond→4σand8π bonds
color(red)("So we have total"->9sigma and 9pi " bonds here")So we have total→9σand9π bonds here