complete the table to describe the properties of each set of elements.\nelements metals or nonmetals…
complete the table to describe the properties of each set of elements.\nelements metals or nonmetals? reactive or unreactive?\nbr, cl, f\nk, rb, na\nar, kr, xe
Answer
Explanation:
Step1: Identify Br, Cl, F
Bromine (Br), chlorine (Cl) and fluorine (F) are halogens, which are non - metals. They are very reactive as they need to gain one electron to achieve a stable octet configuration.
Step2: Identify K, Rb, Na
Potassium (K), rubidium (Rb) and sodium (Na) are alkali metals. They are highly reactive because they have one valence electron which they readily lose to achieve a stable electron configuration.
Step3: Identify Ar, Kr, Xe
Argon (Ar), krypton (Kr) and xenon (Xe) are noble gases. They have full outer electron shells, so they are unreactive.
Answer:
| Elements | Metals or non - metals? | Reactive or unreactive? |
|---|---|---|
| Br, Cl, F | Non - metals | Reactive |
| K, Rb, Na | Metals | Reactive |
| Ar, Kr, Xe | Non - metals | Unreactive |