What conclusions can be drawn about the existence of nitrogen-14 and nitrogen-15? A) They are isotopes of nitrogen and they cont
ain the same number of protons and electrons but each contains a different number of neutrons - 7 and 8 respectively. B) They are the same form of nitrogen and they include the same number of electrons and neutrons but each contains a different number of protons - 7 and 8 respectively. C) They are several allotropes of nitrogen and they accommodate the same number of neutrons but each contains a different numbers of protons and electrons - 7 and 8 respectively. D) They are different configurations of nitrogen and they consist of the same number of protons and neutrons but each contains a different number of electrons - 7 and 8 respectively. Eliminate
<span>Answer: A) They are isotopes of nitrogen and they contain the same number of protons and electrons but each contains a different number of neutrons - 7 and 8 respectively.
Isotopes are atoms of a chemical element whose nucleus has the same atomic number, Z, but different atomic mass, A. The atomic number corresponds to the number of protons in the atom, therefore the isotopes of an element contain the same number of protons and electrons (atoms have to be neutral particles). The difference in atomic masses arises from the difference in the number of neutrons in the atomic nucleus. </span>
