Cycloalkane skeletal structures

Skeletal structures of cycloalkanes imply that there is empty space in the middle of the rings. Use SpartanView to look at. space filling models of cyclohexane, cyclodecane, and Qrclooctadecane. Which, if any, rings have empty space ... 

Cycloalkanes are almost always written as skeletal structures. Skeletal structures show the carbon-carbon bonds as lines, but do not show the carbons or the hydrogens bonded to carbons. Atoms other than carbon and hydrogens bonded to atoms other than carbon are shown. Each vertex in a skeletal structure represents a carbon. It is understood that each carbon is bonded to the appropriate number of hydrogens to give the carbon four bonds. 

Cycloalkanes are alkanes in which the carbon atoms are arranged in a ring, or cyclic, structure. The structural formulas for cycloalkanes are often drawn in a simplified form. In these skeletal representations, such as the one below on the right, it is understood that there is a carbon atom at each corner and enough hydrogen atoms to complete the four bonds to each carbon atom. 

Write the lUPAC names and draw the condensed structural formulas and skeletal formulas for alkanes and cycloalkanes. 

Draw the condensed structural formula for alkanes or the skeletal formula for cycloalkanes for each of the following ... 

The name of a cycloalkane reveals the number of carbon atoms in the ring. For example, cyclopropane (CjHg) is the smallest cycloalkane, with three carbon atoms in the ring. Cyclobutane (C4Hg) has a ring with four carbon atoms. A cyclic hydrocarbon can be represented by condensed, skeletal, and line structures. These structures are illustrated below for cyclobutane. Chemists usually use line structures to depict cycloalkanes. 

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