When two nonmetals or two negatively charged atoms try to form bonds, they always form covalent bonds. Hence, Dinitrogen Pentoxide is not ionic – it is covalent.

Is Trinitrogen dioxide ionic or covalent?

NO2 or nitrogen dioxide is a covalent compound. NO2 is comprised of nitrogen and oxygen which are both highly electronegative chemical elements.

Is CH4 a covalent or ionic compound?

Methane, CH4, is a covalent compound with exactly 5 atoms that are linked by covalent bonds. We draw this covalent bonding as a Lewis structure (see diagram). The lines, or sticks, as we say, represent the covalent bonds. There are four bonds from a central carbon (C) linking or bonding it to four hydrogen atoms (H).