Group 17

Question 1

Fluorine

Answer 1

Toothpaste
Ceramics

Question 2

Chlorine

Answer 2

Bleach dyes and drugs purify drinking water and sterilization

Question 3

Bromine

Answer 3

Fire extinguisher medicene

Question 4

iodine

Answer 4

Salt disinfectants ink drugs

Question 5

Reaction with water

Answer 5

forms acidic solution
Cl2(g) + H2O(l) → HCl(aq) + HOCl(aq) (Reverse reaction)
hydrochloric acid and hypochlorous acid

Question 6

Reaction with metal

Answer 6

Forms metal halide
2Fe(s) + 3Br2(l) → 2FeBr3(s)

Question 7

Reaction with alkaline solution

Answer 7

metal halide, metal halate and water will be formed
I2(s) + 2NaOH(aq) → NaI(aq) + NaOI(aq) + H2O(l)