Question

the element most chemically similar to chlorine is ___. options: na, i, ar, s

Explanation:

Step1: Recall periodic table trends

Elements in the same group (vertical column) of the periodic table have similar chemical properties because they have the same number of valence electrons. Chlorine (Cl) is in Group 17 (halogens).

Step2: Identify group of each option

• Na (Sodium) is in Group 1 (alkali metals).
• I (Iodine) is in Group 17 (halogens), same as Cl.
• Ar (Argon) is in Group 18 (noble gases).
• S (Sulfur) is in Group 16 (chalcogens).

Answer:

I (Iodine)