C. your core will be made of protons will be made of protons and neutrons while being surrounded by "shells" of electrons.
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Stable isotopes refers to those isotopes that do not undergo radioactive decay. Oxygen atoms with atomic number of 16 and 18 are examples of stable isotopes. These isotopes of oxygen are usually found in substances such as polar ice and calcite. These substances are usaually measure with isotope fractionation and the ratios obtained are used to estimate water temperature of ancient oceans. From this, scientists can find out facts about ancient climates,
<span>Standard reduction potential is the likelihood that a species will be reduced. It is written in the form of a reduction half reaction.
</span>Lithium <span> has the lowest standard reduction potential.</span>