5.8 - Writing Chemical Formulae
All compounds are electrically neutral.
Remember these three points:
- In section 4.9.1, we learned
tend to lose their valence
electrons to form cations.
- In section 4.9.2, we
learned that nonmetals
tend to gain electrons to form anions.
- In section 4.5, we learned that
when an ion is formed, the number of electrons that is gained or lost is determined
by the octet
Click here to review the charge
of ions that representative
elements tend to form.
Follow these simple steps to write chemical formulas for
ionic compounds. The steps are the same whether the compound contains simple
ions of Group A elements or polyatomic
Click onand find the
icon to learn the names, formulas and charges from
the list of polyatomic ions for this course.