Question

Write the molecular formula of 2nd and 3rd member of homologous series whose 1 member is methane

Answer 1

humalog series differ by ch2 group and by 14 units

CH4. -C2H6- C3H8



hope this helps you

Answer 2

Hola User________________

Here is YOUR Answer....!!!
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⭐Actually welcome to the concept of the ORGANIC CHEMISTRY...

⭐Basically we know that the Homologous series compounds always differ successively by the

⭐" -CH2- " methylene group ...

⭐as we go downwards the group ..the number of the Methylene groups goes on increasing ...obtaining higher derivatives of the Organic family ...

⭐Thus if the methane is the first member then...

⭐METHANE == CH4

⭐ETHANE == C2H6

⭐PROPANE == C3H8

⭐BUTANE == C4H10

⭐PENTANE == C5H12

⭐thus the General formula is CnH2n+2

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Hope it helps u.....☺〽