The functional group is a group of an atom within a molecule which is responsible for chemical characteristics of that molecule (compound). The first carbon atom after the carbon atom bonded to a functional group is known as alpha carbon and further carbon in a chain are known as beta, gamma progressively. Homologous series is a series of organic compounds with a similar formula, possessing similar chemical properties due to the _______ of the same functional group.

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Solution

For the naming of carbon as alpha, beta and gamma there must be presence of the functional group.

The functional group is a group of an atom within a molecule that is responsible for chemical characteristics of that molecule (compound). The first carbon atom after the carbon atom bonded to a functional group is known as alpha carbon and further carbon in a chain are known as beta, gamma progressively. Homologous series is a series of organic compounds with a similar formula, possessing similar chemical properties due to the $presence$ of the same functional group.

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A __ series of carbon compounds has a different number of carbon atoms but contain the same functional group.

Q. The alpha carbon in an organic compound refers to the carbon atom directly attached to the functional group, such as a carbonyl group.

Q. Assertion :Functional groups are specific groups of atoms or bonds within molecules that are responsible for the characteristic chemical reactions of those molecules. Reason: The same functional group will undergo the same or similar chemical reaction(s) regardless of the size of the molecule.

Fill in the blanks.

(a) Propane and ethane are ..... (homologous, isomers)

(b) A saturated hydrocarbon does not participate in a/an ...... reaction. (substitution, addition)

(d) As the molecular masses of hydrocarbons increase, their boiling points and melting points ....... (increase, decrease)

(e) $C_{25} H_{52}$ and $C_{50} H_{102}$ belong to .... homologous series. (the same, different)

(f) CO is an ...... compound. (organic, inorganic)

(g) The chemical properties of an organic compound are largely decided by the ..... and the physical properties of an organic compound are largely decided by the ...... (functional group, number of carbon atoms)

(h) CHO is the functional group of an ...... (alcohol, aldehyde)

(i) The root in the IUPAC name of an organic compound depends upon the number of carbon atoms in ......... (any chain, principal chain)

(j) But -1-ene and but -2-ene are examples of .... isomerism. (chain,position, functional)

Which series of carbon compounds have different number of carbon atoms but contain the same functional group.

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