Question

three hydrocarbons A B and C having melting point - 183 degree Celsius, - 138 degree Celsius and minus 95.3 degree Celsius respectively which one has minimum number of carbon atoms in molecules​

Answer 1

Answer:

A has the minimum number of carbon atoms in molecules

Explanation:

Because of the lowest melting point of it. If there is less no of carbon atom it will melt at very low temperature.

Answer 2

Hydrocarbon A has minimum number of carbon atoms in it.

Explanation:

• Smaller is the value of melting point of a substance lesser will be the number of carbon atoms present in the substance. Hence, more is the negative value of melting point a hydrocarbon then lesser will be the number of carbon atoms present in it.

• For example, a hydrocarbon with -183 degree celsius melting point will have less number of carbon atoms as compared to a hydrocarbon with -138 degree celsius melting point.

• This is because smaller is value of melting point then smaller will be the molecular mass of the compound and therefore, small is the number of carbon atoms present in the compound.

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