Which of these properties is the best one to use for identification of an element? 1.the number of neutrons in the atomic nucleu
s 2. the number of protons in the atomic nucleus
3.the number of isotopes that are formed by the element
4. the number of charges on ions of the elemen
The number of protons contained in a nucleus (called an atomic number) is characteristic of a chemical element. For a given atomic number, the number of neutrons defines different "types" of this element: isotopes. The variation of the number of protons of the nucleus of an atom, during a nuclear reaction for example, causes a change of the element studied.
The atom with the one valence electron will lose its one, because it's a metal and metals will lose electrons to become stable. The nonmetal (with 7 valence electrons) will gain that electron, therefore creating a stable octet for the nonmetal, making the compound stable.
Science is the study of the physical or material world. Science is important because it can answer questions about new ideas and can advance technologies
