The frequency of a given region of the electromagnetic spectrum is more than 3 x 1019 hz. note that the speed of light is 2.998 x 108 m/s. which waves are found in this region? gamma rays visible light microwaves radio waves x–rays

The waves which are found in these region are gamma rays.

Explanation:

Frequency of a given region of the electromagnetic spectrum is more than

Frequency of the spectrum >

Minimum frequency of the electromagnetic wave in the region =

Value of maximum wavelength:

()

Wavelength with less than 10 picometer belongs to the region where gamma rays lies.

it is the most commonly accepted one

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.