Argon is a noble gas that does not form oxides, hence no acidic or base behaviour.
The oxide of fermium is not known.
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Acid
acid.
Aluminum oxide is classified as a metal oxide. Specifically, it is known as an amphoteric oxide, meaning it can react both as an acid (when combined with a base) and as a base (when combined with an acid).
When a metal oxide neutralizes an acid, it produces a salt and water. This reaction is a type of acid-base reaction where the metal oxide acts as a base and the acid acts as an acid. The salt formed usually contains the metal cation from the metal oxide and the anion from the acid.
Oxygen oxide is not a real substance.
No. Copper oxide has no acid-base properties.
Copper oxide is a base, since it neutralises dilute acid.
Barium oxide is a base. It is an ionic compound that reacts with water to form a strong base, barium hydroxide.
It is amphoteric, meaning that it is both an acid and a base in different situations.
The oxides of tin are amphoteric in nature as SnO, with acid it behaves like a base and with a base like an acid.