We can use bond-line formulas to represent alkenes in much the same way that we use them t...

We can use bond-line formulas to represent alkenes in much the same way that we use them to represent alkanes.consider the following alkene

(a) what is the molecular formula of this alkenes?

(b)  what is its IUPAC name?

(c) How many carbon atoms are sp2-hybridized in this alkene? How many are sp3-hybridized?

(d) How many σ bonds are of the sp2-sp3 type? How many are of the sp3-sp3 type?

Sample Solution (a) Recall when writing bond-line formulas for hydrocarbons that a carbon occurs at each end and at each bend in a carbon chain. The appropriate number of  hydrogens are attached so that each carbon has four bonds. Thus the compound shown is

The general molecular formula for an alkene is Cn H2n Ethylene is; C2H4 propene isC3H6; Counting the carbons and hydrogens of the compound shown (C8H16) reveals that it, too, corresponds toC nH2n.