Stable electron configurations are likely to contain
a. high-energy electrons.
b. unfilled s orbitals.
c. fewer electrons than unstable configurations.
d. filled energy sublevels.

The correct answer among the choices given is option D. Stable electron configurations are likely to contain filled energy sublevels. The electron configuration shows the distribution of the electrons of an atom or a molecule. This configuration largely affect the chemical properties of the elements.

Ithink this is what you meant. the temperature at which a liquid begins to boil is called the boiling point. the boiling point of water is 212°f or 100°c.  and at that point will start to turn into steam (gas)

Anions are negative charged ions