Question

How many pi bonds are shown within the box?

320899 1 To receive credit, you must show your work. STAPLE all pages before submitting your hamework Problems will be selected at random for grading, but a full answer key will be posted to Blackboard. 1. Below is a nanodragster. YES, we can make machines-cars, even-at the nano- scale, the sizes of molecules. This little nanodragster has some nifty features. Its chassis is rigid like the chassis of a real car. The main axis of the nanochassis, which is boxed below, is held together by sigma bonds. It's also rigid like a real chassis, but the rigidity comes from pi bonds OC10M21 OC10M21 HH2,CoO OC10H21 H21C100 oC 10H21 H2.CiO -Me Me

Answer 1

Pi bonds are the bonds which form by the sidewise overlap of atomic orbitals. And sigma bonds are the bonds which form by head on overlap of atomic orbitals. Pi bonds always occur in multiple bonds between two atoms . A double bond contain one sigma and one pi whereas a pi bond contains one sigma two pi bonds . Applying the above rule to calculate no of pi bonds within box :

no of double bonds =12, si number of pi bonds =12.

no. of triple bonds =3,so number of pi bonds =3×2=6.

So total number of pi bonds = 12+6

=18.