Question

1. which element is more reactive: sodium (na) or chlorine (cl)?

Explanation:

Step1: Analyze the reactivity of Sodium

Sodium is a metal. Metals tend to lose electrons. Sodium has one valence electron. It readily loses this electron to achieve a stable electron configuration.

Step2: Analyze the reactivity of Chlorine

Chlorine is a non - metal. Non - metals tend to gain electrons. Chlorine has seven valence electrons. It readily gains one electron to achieve a stable electron configuration.

Step3: Compare the reactivity

Both Sodium and Chlorine are very reactive elements. Sodium reacts vigorously with water, oxygen etc. Chlorine is a strong oxidizing agent and reacts with many metals and non - metals. However, in terms of common reactivity trends and reactions observed in basic chemistry (e.g., reaction with water for Na is highly exothermic and for Cl₂, it forms a mixture of acids etc.), Sodium is more reactive in the sense of its eagerness to lose an electron and start reactions under normal conditions more "violently" in some common - ly observed reactions.

Answer:

Sodium (Na) is more reactive.