Group 17

Which element has a yellow colour at room temperature?

• Fluorine

• Chlorine

• Bromine

• Iodine

Which of the following is a solid at room temperature?

• Fluorine

• Chlorine

• Bromine

• Iodine

Which of the following properties decreases going down the group?

• Boiling point

• Reactivity

• Melting point

• Atomic radius

How is the appearance of bromine?

• purple solid

• brown liquid

• green gas

• yellow gas

Element X dissolves in water to produce a solution that turns the blue litmus paper red and then decolourised. What is element X?

• Sodium

• Bromine

• Sulphur

• Neon

Based on what you have learnt, predict the properties of Astatine. Given that Astatine is an element in Group 17 of the Periodic Table.

• Dark brown colour gas with a rapid reaction with H₂O to give 2 acids

• Black colour solid with a no reaction with H₂O

• Black colour solid with a very slow reaction with H₂O to give 2 acids

• Dark brown colour solid with a no reaction with H₂O

Element of Group 17 show the following properties except for

• The acidity of HX increases down the group

• Thermal stability of HX decreases down the group

• Volatility of halogen increases down the group

• Boiling point of halogen increases down the group

The following statements describe the characteristics of an element

• has an electron configuration 2.8.7
• a greenish-yellow gas at room temperature
• exists as a diatomic molecule

This element is probably

• sodium

• neon

• bromine

• chlorine

The following statements describe the characteristics of an element

• has an electron configuration 2.8.7
• a greenish-yellow gas at room temperature
• exists as a diatomic molecule

This element is probably

• sodium

• neon

• bromine

• chlorine

Halogens

• Group 1A

• Group 2A

• Group 7A

• Group 8A