Atomic mass, the quantity of matter contained in an atom of an element. It is expressed as a multiple of one-twelfth the mass of the carbon-12 atom, which is assigned an atomic mass of 12 units. In this scale, 1 atomic mass unit (amu) corresponds to 1.66 x 10^−24 gram. Learn what 1 atomic mass unit (AMU) is equal to in different units of mass, such as kilograms, grams, electron volts, and daltons. Find out why AMU is important in chemistry and physics and how it is used to calculate molecular masses. Question 2 Define atomic mass unit? Question 3 What is the mass of hydrogen atom? Question 4 Name the element used as a standard for atomic mass scale? Atomic Mass of an Element Actual masses of the atoms of the elements are very very small. For Example : The atom of hydrogen has a mass of 1.6727 x 10-27 kg. What is Atomic Mass? Every particle of matter has some amount of mass associated with it whether small or large. Everything is made up of atoms. The mass of an atomic particle is called the atomic mass. This is commonly expressed as per the international agreement in terms of a unified atomic mass unit (amu). The atomic mass of an atom is a feature that is closely related to its mass number. A single atom’s atomic mass is just its total mass, and it is commonly given in atomic mass units ...
