The weight of an atom is primarily determined by the total number of protons and neutrons in its nucleus. Electrons, which have negligible mass, also contribute to the atom's weight but to a much smaller extent.
atom<cell
No region has all the weight, but the vast majority of the mass of an atom is in the nucleus.
An atom of oxygen has twice the weight of an atom of nitrogen since the atomic weight of nitrogen is around 14 amu (atomic mass units), while the atomic weight of oxygen is around 16 amu.
It is called the atomic no. of element. It is also equal to the no. of electrons in the atom.
Protons and neutrons lie in the atom's nucleus, accounting for almost 100% of the atom's weight. The center of an atom is called it's nucleus.
None Even electrons have weight
The number of protons and neutrons controls the weight of an atom.
The center of an atom is called the nucleus.
The center of an atom is called a nucleus (nucleifor plural).Center of an atom is called the "Nucleus".
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