Question

the model shows the trend of electronegativity in the periodic table. use the drop - down menus to describe the halogen gas with the highest reactivity. iodine has the highest reactivity because it has the

Explanation:

Step1: Recall electronegativity - reactivity relation

Higher electronegativity means higher tendency to attract electrons and higher reactivity for non - metals.

Step2: Identify halogen with highest electronegativity

Among halogens (group 17 elements: F, Cl, Br, I, At), fluorine has the highest electronegativity value of 4.0 as shown in the periodic table and in general knowledge of periodic trends.

Answer:

Fluorine; highest electronegativity