Complete the table given below

 

• Analyse the above table and find out how many hydrogen atoms would be present in an alkyne with 'n' carbon atoms.
• If so, can a general formula of alkynes be deduced? Try to write the general formula of alkynes?
• Check whether the alkynes given in the above table are members of a homologous series.

Observe the table below:

Structure	Molecular formula	Name
	${\mathrm{CH}}_4$	Methane
	${\mathrm{C}}_2{\mathrm{H}}_6$	Ethane
	${\mathrm{C}}_3{\mathrm{H}}_8$	Propane

Have you seen any special features in these names? How the names are derived from the word roots?

Write the IUPAC name of all the alkanes.

Which of these chains has the lowest number of carbon atom carrying the branch?

a. Number for the carbon atom carrying the branch?
b. Number of carbon atoms in the main chain.
c. Word root
d. Suffix
e. Name of the alkyl radical coming as branch.
f.  Position of the branch.

Write the IUPAC name of the given hydrocarbons by identifying the longest chains and the position of the branch.

Some structural formulas are given below. Name them.

(i) Number of carbon atoms in the main chain: 

(ii) Number of branch/branches: 

(iii) Position of the first branch while numbering from left to right: 

(iv) Position of the first branch while numbering from right to left: 

(v) Is there any change in the position number: 

(vi) IUPAC name: 

(i) Number the carbon atoms in the main chain of the compound given above. Select the correct position numbers of the branches.

(ii) IUPAC name_____