Respuesta :

Answer:

chlorine

Explanation:

sodium chloride, it is missing chlorine

Answer:

Acid

Explanation:

Metal oxides are basic in nature. So if an acid reacts with a metal oxide neutralization reaction takes place. In these types of reactions respective salt and water are formed.

Acid + Metal Oxide ⇨ Salt + Water

Example:

Calcium is a metal, thus calcium oxide is a metallic oxide which is basic in nature. When an acid; such as hydrochloric acid; reacts with calcium oxide, neutralization reaction takes place and calcium chloride; along with water; is formed.

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