The term pentoxide refers to there being five oxygen atoms in a molecule along with some other element.
For example N2O5 is dinitrogen pentoxide
semi: half uni: one duo, bi: two tri, tris: three quadri, tetra: four penta: five hexa: six hepta: seven octo: eight ennea: nine deca: ten
Magnesium Oxide
Al is the symbol for Aluminum and O is the symbol for oxygen. When oxygen is paired in a compound, it is changed to oxide. The name then is aluminum oxide.
It is Sodium Oxide
Cuprous oxide or copper(I) oxide. This is copper in oxidation state '1'.
Acid
Five. Penta = 5 in Greek.Five. Penta = 5 in Greek.Five. Penta = 5 in Greek.Five. Penta = 5 in Greek.
The population of Penta-Acquatella is 42.
Penta Security was created in 1997.
The population of Penta Security is 100.
penta = five, as in pentagon, or pentagram
Volvo Penta was created in 1907.
4= either "tetra" or "quad" 5=either "quint" or "penta"
The duration of Penta Geyser is 2 hours.
Penta is of Greek origin.
starfish are penta-morphic ie. they show penta morphism.
Penta-di-Casinca's population is 2,855.