Question

What is atomic mass? How is it measured, write with examples.​

Answer 1

Answer:

An atomic mass unit is defined as a mass equal to one twelfth the mass of an atom of carbon-12. The mass of any isotope of any element is expressed in relation to the carbon-12 standard. For example, one atom of helium-4 has a mass of 4.0026 amu. An atom of sulfur-32 has a mass of 31.972 amu.

Explanation:

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Answer 2

Answer:

Atomic mass number is the total number of Protons and Neutrons in the atomic nucleus is called as atomic number. The atomic number is measured as the total number of Protons and Neutrons. (p+n)

Explanation:

Hydrogen atom contains only one proton and no neutron so it's atomic mass number is 1.

Helium has two protons and two neutron and it has atomic mass of 4.