The substances largely ionic are:
NF3
N2
BrF3
PCl3
Oxygen is the most common element which Sulfur makes covakent bonds with as in SO3 or H2SO4
C. Model. It's a graphical model that displays one or more weather elements.
Tiny organisms known as cyanobacteria, or blue-green algae.
Nickel (II) oxide, iron (III) oxide, chromium (III) oxide, magnesium oxide
