The atomic number varies across different elements, with each element having a unique atomic number that corresponds to the number of protons in its nucleus.
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The atomic number of hydrogen is 1 because each hydrogen atom contains one proton in its nucleus.
The atomic number of an element corresponds to the total number of protons present in the nucleus of its atoms. It is represented by ‘Z’ in the periodic table.
The atomic number (denoted by ‘Z’) uniquely identifies each element and determines its chemical properties. Elements are defined by the number of protons they possess, which is reflected in their atomic number.
The mass number contributes to an atom’s stability, with isotopes having different mass numbers due to varying numbers of neutrons. Some isotopes may be more stable than others, depending on the balance between protons and neutrons in the nucleus.