Hede.io Entry: Atomic Number
Atomic number of a
chemical element is the number of
proton particles in the
nucleus of an
chemistry the symbol for atomic number is the letter Z. Since a
neutron has no
charge while protons have a positive charge the atomic number of an atom is the same as the
charge number of the atom's nucleus.
Atoms with different numbers of neutron particles but with the same atomic number are known as a chemical element's
isotope. If an atom is uncharged the atomic number is the same as the number of
electron particles the atom has. If the number of electrons in an atom is not equal to the atomic number the atom is either a negative or positive
The atomic number of a chemical element determines the position of the element on the
periodic table of chemical elements.
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