Chemistry · Nuclear Physics

Radioactivity is the phenomenon of the spontaneous disintegration of unstable atomic nuclei to atomic nuclei to form more energetically stable atomic nuclei. Radioactive decay is a highly exoergic, statistically random, first-order process that occurs with a small amount of mass being converted to energy. Spectroscopy is the study of the absorption and emission of light and other radiation by matter. Gravimetric analysis is a type of lab technique used to determine the mass or concentration of a substance by measuring a change in mass. chromatography, technique for separating the components, or solutes, of a mixture on the basis of the relative amounts of each solute distributed between a moving fluid stream, called the mobile phase, and a contiguous stationary phase.

Spectroscopy is the field of study that measures and interprets the electromagnetic spectra that result from the interaction between electromagnetic radiation and matter as a function of the wavelength or frequency of the radiation. hence incorrect

Radioactivity is the phenomenon of the spontaneous disintegration of unstable atomic nuclei to atomic nuclei to form more energetically stable atomic nuclei. Radioactive decay is a highly exoergic, statistically random, first-order process that occurs with a small amount of mass being converted to energy. Spectroscopy is the study of the absorption and emission of light and other radiation by matter. Gravimetric analysis is a type of lab technique used to determine the mass or concentration of a substance by measuring a change in mass. chromatography, technique for separating the components, or solutes, of a mixture on the basis of the relative amounts of each solute distributed between a moving fluid stream, called the mobile phase, and a contiguous stationary phase.

gravimetery is basically the measurement of weight. hence incorrect

chromatography is a laboratory technique for the separation of a mixture into its components, hence incorrect