Answer:
Sodium: D
Silicon: C
Bromine: B
Argon: A
Explanation:
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We can join as follows:
Argon: non-reactive gas. It is a noble gas so its last orbit is complete with electrons, so it is a gas that is not reactive.
Bromine: highly reactive gas.
Bromine at room temperature is a liquid. It is highly reactive and reacts with metals, it is also corrosive.
Silicon: It has properties of both metals and nonmetals. Because of its location in the periodic table, silicon is a metalloid and therefore has properties of metals and nonmetals.
Sodium: malleable, soft and bright. Being a metal, it is malleable.
