Question

Name the device used for measuring the mass of atoms and molecules.

Answer 1

Chemical substances are detected via mass spectrometry, also known as mass spectroscopy, which involves sorting gaseous ions in electric and magnetic fields according to their mass-to-charge ratios. Mass spectrometers and mass spectrographs are the equipment utilised in this research, and they work on the idea that moving ions can be deflected by electric and magnetic fields.

Complete answer:
Mass spectrometers were invented by J.J Thompson. Aston tweaked the gadget to improve its accuracy. A mass spectrometer has been used to determine the mass of an electron; in this situation, electrons were simply pushed through the instrument. When an atom contains the correct number of electrons, rather than a dearth or excess, physicists can use this measurement to determine its mass. The magnetic force that is applied to a charged particle in motion is used to operate the mass spectrometer.
Physicists have calculated the mass of a hydrogen atom to be $1.660538921\left( {73} \right) \times {10^{ - 27}}kg$ using a mass spectrometer, where the parenthetical numbers are not known with precision. For the most part, that's accurate enough.

Additional information:
The mass to charge ratio of ions is used to separate them in a mass spectrometer. The majority of the ions are uncharged. As a result, the mass-to-charge ratio equals the mass.

Note:
It should be emphasized that ions are sorted out in mass spectrometers by accelerating them through an electric and magnetic field. The mass spectrum is a record of the number of distinct types of ions.