Question

Define atomic mass unit how is it linked with relative atomic mass?
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Answer 1

Answer:

Atomic mass unit is defined as 1/12 the mass of carbon atom C-12. Relative atomic mass of an element is the number of times one atom of the element is heavier than 1/12 times of the mass of an atom of carbon-12

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Answer 2

Atomic mass unit is defined as the mass that is exactly equal to 1/12th of the mass of one carbon-12 atom.

• Mass of one carbon-12 atom=12 a.m.u.
• 1 a.m.u=1/12 x mass of one carbon-12 atom.
• $1 a.m.u=1.66X10^{-24} g.$
• Atomic mass is the mass of one atom of an element. It is defined as the algebric sum of protons, neutrons and electrons in an atom. It is also expressed in a.m.u.
• a.m.u is also written as u(unified mass).
• Relative atomic mass is defined as the number of times an atom is heavier than 1/12th the mass of one carbon-12 atom.
• It is a unitless quantity.

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