Write the structure and give IUPAC systematic name of an alkane or cycloalkane with the formula :
(a) `C_(8)H_(18)` that has only primary hydrogen atoms
(b) `C_(6)H_(12)` that has only secondary hydrogen atoms.

Answer

(a) `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH_(3)` (b) `(##ALN_CHM_C02_(II)_E01_056_A01##)`