Basic chemistry for all students Atomic Number atomic waight symbol Definition, Meaning & Importance
Автор: Physics by Ranjeet sir
Загружено: 2026-01-05
Просмотров: 83
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Atomic number is the total number of protons present in the nucleus of an atom. It is denoted by Z. Atomic number uniquely identifies an element and determines its position in the periodic table.
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Atomic weight is the average mass of an atom, approximately equal to the sum of protons and neutrons in the nucleus. It is measured in atomic mass unit (amu) and helps in comparing masses of different elements.
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Atomic structure describes the arrangement of subatomic particles—protons, neutrons, and electrons—inside an atom. Protons and neutrons are present in the nucleus, while electrons revolve around the nucleus in different energy levels.
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