Write IUPAC names of the following compounds :
(i) `(CH_(3))_3C CH_(2)C(CH_(3))_(3)`
(ii) `(CH_(3))_2C(C_(2)H_(5))_(2)`
(iii) tetra -tert-butylmethane

Explanation

(i) 2, 2, 4, 4 - Tetramethylpentane (ii) 3, 3 - Di - tery - butyl -2, 2, 4, 4- tetra methylpentane
If it is important to wirte the correct IUPAC name for a given structure, it is equally important to write the correct structures from the givn IUPAC name. To do this, first of all, the longest chain of carbon atoms corresponding to the parent alkane is written. Then after numbering it, the substituents are attached to the correct carbon atoms and finally valence of each carbon atom is satisfied by putting the correct number of hydrogen atoms of 3 - ethyl -2, 2- dimethylpentane in the following steps:
i) Draw the chain of five carbon atoms : `C-C-C-C-C`
ii) Give number to carbon atoms : `" "C^(1)-C^(2)-C^(3)-C^(4)-C^(6)`
iii) Attach ethyl group at carbon 3 and two methyl groups at carbon 2
iv) Satisfy the valence of each carbon atom by putting requisite number fof hydrogen atoms :
Thus we arried at the correct structure. If you have understood writing of structure from the given name, attempt the following problems.