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Which of the following is the main reason why the size of halogen atoms increases when moving down Group 17?
Halogens exist as diatomic molecules at room temperature. Which of the following is an example of the correct molecular formula for chlorine gas?
Why do the melting and boiling points of halogen elements increase as you move down Group 17?
Based on the change in physical state down the group, what is the physical state of Bromine (Br₂) at room temperature?
Why does the reactivity of halogens decrease as you go down Group 17?
What will be observed when a hot piece of iron reacts with chlorine gas?
Chlorine reacts with sodium hydroxide solution (alkali) to produce a component used in bleach. What is the name of the compound?
Which of the following is an important use of the element Iodine in daily life?
How do the colors of the halogen elements change as you move down Group 17?
What is formed when a halogen gains an electron during a chemical reaction?