Name these organic compounds: | Η Η | Η Η Η II | H=C=C=H Η | H —C =C=C=C=C=C=C=H structure H Η | Η H H H Η Η H H | | | | Η Η Η Η Η | | | H=C=C=C-H name

According to IUPAC nomenclature : 

• Select the longest continuous chain of carbon atoms called as parents chain.
  
• Number the carbon atoms of parent chain starting from that and which gives lowest possible number to the carbon atom carrying substituent.
• The general formula to name the compound is given as prefix + root word + suffix.
• The root word represents the count of carbon atoms that constitute the longest continuous chain.
• The suffix comprises a primary suffix and a secondary suffix. The primary suffix is the type of bond present in the compound (single, double, or triple) whereas the secondary suffix is any functional group.

Suffix for alkanes = 'ane '

Prefixes meth, eth, prop, but, pent, hex , hept etc. are used respectively for one, two, three, four, five , six , seven carbon atoms in the chain