Question

the mass of an atom is due to the assembly of ​

Answer 1

Answer:

proton and neutron

Explanation:

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Answer 2

Answer:

The mass of an atom is due to the assembly of ​protons and neutrons.

Explanation:

• The mass of an atom is determined by the mass of its nucleus, which consists of protons and neutrons grouped together as nucleons.
• An element's atomic mass is the average mass of its atoms measured in atomic mass unit (amu, also known as daltons, D).
• The atomic mass is a weighted average of all of the isotopes of that element, calculated by multiplying the mass of each isotope by its abundance.
• Protons and neutrons are the fundamental particles whose masses account for the majority of an atom's mass.
• Neutrons and protons, collectively known as nucleons, are bound together in an atom's dense inner core, the nucleus, where they account for 99.9 percent of the atom's mass.

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