The criteria that must be followed for an element to be made are :
A new element is made/discovered when the nuclide of the element has an atomic number that is significantly different from the atomic numbers of existing elements. some the first elements discovered in laboratories are ; curium , americium, and berkelium. with atomic number ( Z ) significantly different from each other
when the new element ( discovered ) element meets the required criteria they can then be added to the periodic table.
Hence we can conclude that the criteria that must be followed for an element to be made are ; Element will have an atomic number ( Z ) that is different from the atomic number of existing elements. and The atomic number of the new element should exist for at least 10⁻¹⁴ s.
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