Question

4.2 Which of the following is not another representation for isopentane? H a. CH2CH2-C-CH3 C. CH2CH2CH(CH3)2 e. CH3 H-C-CH₂ b. CHz-C-CH3 HH H- CC-H CH3-C-H CH3 f. CH2CH(CH3)CH2CH3

Answer 1

option do is not another correct representations for isopentane: for identifying this we observe the Conneetivity of carbon atoms in all molecules. 43 H 1 a) SCHCH2 - CH3 2-methyl butane is called - CH₂ as Isopentane. That means to a 4 membered carbon chain -CH3 should be there at C-2 Position H-¢-CH3 Ć-Cha ... This can be written as, "CH₂ - CH₂ - CH3-CH-CH₂ CH3-CH-CH2-CH₂ с Isopentane This is also isopentane. CHECH2 CH CH3)2 The above can be shown as CH CH CH 4 3 2 CH This is also another representation for isopentane, H- CH CH, -,-1: 2 E city s HC - CH2 "ТЕ CH3-CH = CH3-CH₂ = CH₂-CH₂ n-pentane The above is not isopentane structure ... This (d) is the answer.

f) CH3 -CH(CH3)CH2CH3 In the above-et is connected to -CH- Carbon atom, 1 2 3 4 | Ctz-CH-CH₂-CH3 L This is also isopentane. structure, citz ce) y C ity' This also Isobentane structure. .. option(d) is not isopentane rrepresentation