Question

define atomic mass unit what is its symbol​

Answer 1

Answer:

Atomic mass unit is defined as one - twelfth the mass of an atom of carbon - 12. It is denoted by the letter 'u'.

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Answer 2

Atomic mass unit:

• The Dalton or unified atomic mass unit is a unit of mass widely used in physics and chemistry. It is defined as 1/12 of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state and at rest.

• In this scale, 1 atomic mass unit (AMU) corresponds to 1.660539040*10^-24gram. The atomic mass unit is also called the Dalton (Da), after English chemist John Dalton.

• The observed atomic mass is slightly less than the sum of the masses of the protons, neutrons, and electrons that make up the atom.

• The difference, called the mass defect, is accounted for during the combination of these particles by conversion into binding energy.
• According to an equation in which the energy (E) released equals the product of the mass(m) consumed and the square of the velocity of light in a vacuum. Thus, E = mc2