Draw a skeletal structure for an alkane that has

a. six carbons, all secondary.

b. eight carbons and only primary hydrogens.

c. seven carbons with two isopropyl groups.

Skeletal structures display bonds and atoms, carbon, not necessarily to be represented. Carbon that is bonded to two additional carbons is known as secondary carbon and hydrogen that is bonded to secondary carbon is known as secondary hydrogen.

Therefore, the skeletal structure for an alkane that has six carbons, all secondary is shown below.

The skeletal structures is the one that displays bonds and atoms and a primary carbon is one that is connected to primary hydrogen.

The skeletal structure for an alkane that has eight carbons and only primary hydrogens is shown below.

The skeletal structure is the one that displays bonds and atoms. Also, when hydrogen is removed from propane's secondary carbon, an isopropyl group is formed.

The skeletal structure for an alkane has seven carbons with two isopropyl groups.