Question

1. why is diagram #2 considered an ion? in your answer, include whether this ion is positive or negative. 3. why is diagram #3 considered an isotope?

Explanation:

An ion is an atom or molecule with a net electric charge due to the loss or gain of electrons. A positive ion (cation) forms when an atom loses electrons, and a negative ion (anion) forms when an atom gains electrons. Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons. Without seeing the diagrams, we assume that if diagram #2 has a different number of electrons from protons, it is an ion, and its charge depends on whether it has more protons (positive) or more electrons (negative). Diagram #3 is considered an isotope if it has the same number of protons as the reference atom of the element but a different number of neutrons.

Answer:

1. Diagram #2 is considered an ion if it has a different number of electrons from protons. If it has more protons than electrons, it is a positive ion; if it has more electrons than protons, it is a negative ion.
2. Diagram #3 is considered an isotope if it has the same number of protons as the standard - form of the element but a different number of neutrons.